77531032452 has 24 divisors (see below), whose sum is σ = 183871412032. Its totient is φ = 25420010400.

The previous prime is 77531032429. The next prime is 77531032459. The reversal of 77531032452 is 25423013577.

It is a super-2 number, since 2×77531032452² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 77531032452.

It is not an unprimeable number, because it can be changed into a prime (77531032459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52957624 + ... + 52959087.

Almost surely, 2^77531032452 is an apocalyptic number.

It is an amenable number.

77531032452 is an abundant number, since it is smaller than the sum of its proper divisors (106340379580).

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

77531032452 is a wasteful number, since it uses less digits than its factorization.

77531032452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105916779 (or 105916777 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 39.

It can be divided in two parts, 77 and 531032452, that multiplied together give a palindrome (40889498804).

The spelling of 77531032452 in words is "seventy-seven billion, five hundred thirty-one million, thirty-two thousand, four hundred fifty-two".