77869033920 has 168 divisors, whose sum is σ = 276477252480. Its totient is φ = 20095211520.

The previous prime is 77869033883. The next prime is 77869033927. The reversal of 77869033920 is 2933096877.

It is a super-2 number, since 2×77869033920² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77869033927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 346815 + ... + 525374.

Almost surely, 2^77869033920 is an apocalyptic number.

It is an amenable number.

77869033920 is an abundant number, since it is smaller than the sum of its proper divisors (198608218560).

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

77869033920 is a wasteful number, since it uses less digits than its factorization.

77869033920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872243 (or 872230 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 54.

The spelling of 77869033920 in words is "seventy-seven billion, eight hundred sixty-nine million, thirty-three thousand, nine hundred twenty".