3655239249424 has 45 divisors (see below), whose sum is σ = 8238395850381. Its totient is φ = 1566508164480.

The previous prime is 3655239249401. The next prime is 3655239249427. The reversal of 3655239249424 is 4249429325563.

It is a happy number.

The square root of 3655239249424 is 1911868.

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

It can be written as a sum of positive squares in only one way, i.e., 637653355024 + 3017585894400 = 798532^2 + 1737120^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3655239249427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 53498164 + ... + 53566444.

Almost surely, 2^{3655239249424} is an apocalyptic number.

3655239249424 is the 1911868-th square number.

It is an amenable number.

3655239249424 is an abundant number, since it is smaller than the sum of its proper divisors (4583156600957).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3655239249424 is an frugal number, since it uses more digits than its factorization.

3655239249424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136584 (or 68290 counting only the distinct ones).

The product of its digits is 55987200, while the sum is 58.

The spelling of 3655239249424 in words is "three trillion, six hundred fifty-five billion, two hundred thirty-nine million, two hundred forty-nine thousand, four hundred twenty-four".