785540000077 has 48 divisors (see below), whose sum is σ = 943620572160. Its totient is φ = 651627244800.

The previous prime is 785540000057. The next prime is 785540000099. The reversal of 785540000077 is 770000045587.

It is not a de Polignac number, because 785540000077 - 2³⁵ = 751180261709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 785539999988 and 785540000042.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (785540000027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 130117903 + ... + 130123939.

It is an arithmetic number, because the mean of its divisors is an integer number (19658761920).

Almost surely, 2^785540000077 is an apocalyptic number.

It is an amenable number.

785540000077 is a deficient number, since it is larger than the sum of its proper divisors (158080572083).

785540000077 is a wasteful number, since it uses less digits than its factorization.

785540000077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6602 (or 6595 counting only the distinct ones).

The product of its (nonzero) digits is 274400, while the sum is 43.

The spelling of 785540000077 in words is "seven hundred eighty-five billion, five hundred forty million, seventy-seven", and thus it is an aban number.