63531157352 has 24 divisors (see below), whose sum is σ = 128988927990. Its totient is φ = 29322072000.

The previous prime is 63531157307. The next prime is 63531157357. The reversal of 63531157352 is 25375113536.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 43266496036 + 20264661316 = 208006^2 + 142354^2 .

It is not an unprimeable number, because it can be changed into a prime (63531157357) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23493899 + ... + 23496602.

Almost surely, 2^63531157352 is an apocalyptic number.

It is an amenable number.

63531157352 is an abundant number, since it is smaller than the sum of its proper divisors (65457770638).

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

63531157352 is a wasteful number, since it uses less digits than its factorization.

63531157352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46990533 (or 46990516 counting only the distinct ones).

The product of its digits is 283500, while the sum is 41.

The spelling of 63531157352 in words is "sixty-three billion, five hundred thirty-one million, one hundred fifty-seven thousand, three hundred fifty-two".