77954525628 has 48 divisors (see below), whose sum is σ = 208239139584. Its totient is φ = 22234106880.

The previous prime is 77954525609. The next prime is 77954525629. The reversal of 77954525628 is 82652545977.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77954525629) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 755718 + ... + 852653.

It is an arithmetic number, because the mean of its divisors is an integer number (4338315408).

Almost surely, 2^77954525628 is an apocalyptic number.

It is an amenable number.

77954525628 is an abundant number, since it is smaller than the sum of its proper divisors (130284613956).

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

77954525628 is a wasteful number, since it uses less digits than its factorization.

77954525628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608962 (or 1608960 counting only the distinct ones).

The product of its digits is 42336000, while the sum is 60.

The spelling of 77954525628 in words is "seventy-seven billion, nine hundred fifty-four million, five hundred twenty-five thousand, six hundred twenty-eight".