77182135980 has 24 divisors (see below), whose sum is σ = 216109980912. Its totient is φ = 20581902912.

The previous prime is 77182135973. The next prime is 77182135981. The reversal of 77182135980 is 8953128177.

It is a super-2 number, since 2×77182135980² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77182135981) 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, 643184407 + ... + 643184526.

It is an arithmetic number, because the mean of its divisors is an integer number (9004582538).

Almost surely, 2^77182135980 is an apocalyptic number.

It is an amenable number.

77182135980 is an abundant number, since it is smaller than the sum of its proper divisors (138927844932).

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

77182135980 is a wasteful number, since it uses less digits than its factorization.

77182135980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286368945 (or 1286368943 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 51.

The spelling of 77182135980 in words is "seventy-seven billion, one hundred eighty-two million, one hundred thirty-five thousand, nine hundred eighty".