61452351145 has 8 divisors (see below), whose sum is σ = 78080634504. Its totient is φ = 46270005504.

The previous prime is 61452351131. The next prime is 61452351167. The reversal of 61452351145 is 54115325416.

It can be written as a sum of positive squares in 4 ways, for example, as 615635344 + 60836715801 = 24812^2 + 246651^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61452351145 - 2⁷ = 61452351017 is a prime.

It is a super-2 number, since 2×61452351145² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361484334 + ... + 361484503.

It is an arithmetic number, because the mean of its divisors is an integer number (9760079313).

Almost surely, 2^61452351145 is an apocalyptic number.

It is an amenable number.

61452351145 is a deficient number, since it is larger than the sum of its proper divisors (16628283359).

61452351145 is a wasteful number, since it uses less digits than its factorization.

61452351145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722968859.

The product of its digits is 72000, while the sum is 37.

The spelling of 61452351145 in words is "sixty-one billion, four hundred fifty-two million, three hundred fifty-one thousand, one hundred forty-five".