77732087077028 has 12 divisors (see below), whose sum is σ = 136326230809692. Its totient is φ = 38781735417120.

The previous prime is 77732087077019. The next prime is 77732087077037. The reversal of 77732087077028 is 82077078023777.

It is an interprime number because it is at equal distance from previous prime (77732087077019) and next prime (77732087077037).

It can be written as a sum of positive squares in 2 ways, for example, as 23626676689984 + 54105410387044 = 4860728^2 + 7355638^2 .

It is a super-2 number, since 2×77732087077028² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 21077028275 + ... + 21077031962.

It is an arithmetic number, because the mean of its divisors is an integer number (11360519234141).

Almost surely, 2^{77732087077028} is an apocalyptic number.

It is an amenable number.

77732087077028 is a deficient number, since it is larger than the sum of its proper divisors (58594143732664).

77732087077028 is a wasteful number, since it uses less digits than its factorization.

77732087077028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42154060702 (or 42154060700 counting only the distinct ones).

The product of its (nonzero) digits is 90354432, while the sum is 65.

The spelling of 77732087077028 in words is "seventy-seven trillion, seven hundred thirty-two billion, eighty-seven million, seventy-seven thousand, twenty-eight".