77854769400 has 48 divisors (see below), whose sum is σ = 241349787000. Its totient is φ = 20761271680.

The previous prime is 77854769339. The next prime is 77854769413. The reversal of 77854769400 is 496745877.

It is a super-2 number, since 2×77854769400² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64878375 + ... + 64879574.

Almost surely, 2^77854769400 is an apocalyptic number.

It is an amenable number.

77854769400 is an abundant number, since it is smaller than the sum of its proper divisors (163495017600).

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

77854769400 is a wasteful number, since it uses less digits than its factorization.

77854769400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129757968 (or 129757959 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 57.

The spelling of 77854769400 in words is "seventy-seven billion, eight hundred fifty-four million, seven hundred sixty-nine thousand, four hundred".