4245697339081 has 15 divisors (see below), whose sum is σ = 4670512342455. Its totient is φ = 3859498197720.

The previous prime is 4245697339027. The next prime is 4245697339097. The reversal of 4245697339081 is 1809337965424.

It is a happy number.

The square root of 4245697339081 is 2060509.

It is a perfect power (a square), and thus also a powerful number.

4245697339081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3395576458681 + 850120880400 = 1842709^2 + 922020^2 .

It is not a de Polignac number, because 4245697339081 - 2²³ = 4245688950473 is a prime.

It is a super-2 number, since 2×4245697339081² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4245697339001) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 249313075 + ... + 249330103.

It is an arithmetic number, because the mean of its divisors is an integer number (311367489497).

It is a 1-persistent number, because it is pandigital, but 2⋅4245697339081 = 8491394678162 is not.

Almost surely, 2^{4245697339081} is an apocalyptic number.

4245697339081 is the 2060509-th square number.

4245697339081 is the 1030255-th centered octagonal number.

It is an amenable number.

4245697339081 is a deficient number, since it is larger than the sum of its proper divisors (424815003374).

4245697339081 is an frugal number, since it uses more digits than its factorization.

4245697339081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34102 (or 17040 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 61.

The spelling of 4245697339081 in words is "four trillion, two hundred forty-five billion, six hundred ninety-seven million, three hundred thirty-nine thousand, eighty-one".