77002132512 has 24 divisors (see below), whose sum is σ = 202130598096. Its totient is φ = 25667377472.

The previous prime is 77002132511. The next prime is 77002132517. The reversal of 77002132512 is 21523120077.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×77002132512² (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 77002132512.

It is not an unprimeable number, because it can be changed into a prime (77002132511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401052678 + ... + 401052869.

It is an arithmetic number, because the mean of its divisors is an integer number (8422108254).

Almost surely, 2^77002132512 is an apocalyptic number.

It is an amenable number.

77002132512 is an abundant number, since it is smaller than the sum of its proper divisors (125128465584).

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

77002132512 is a wasteful number, since it uses less digits than its factorization.

77002132512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802105560 (or 802105552 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 30.

Adding to 77002132512 its reverse (21523120077), we get a palindrome (98525252589).

The spelling of 77002132512 in words is "seventy-seven billion, two million, one hundred thirty-two thousand, five hundred twelve".