7700785540 has 48 divisors (see below), whose sum is σ = 18559296000. Its totient is φ = 2629210752.

The previous prime is 7700785537. The next prime is 7700785601. The reversal of 7700785540 is 455870077.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81615 + ... + 148534.

It is an arithmetic number, because the mean of its divisors is an integer number (386652000).

Almost surely, 2^7700785540 is an apocalyptic number.

7700785540 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7700785540 is an abundant number, since it is smaller than the sum of its proper divisors (10858510460).

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

7700785540 is a wasteful number, since it uses less digits than its factorization.

7700785540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230404 (or 230402 counting only the distinct ones).

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

The square root of 7700785540 is about 87754.1197893295. The cubic root of 7700785540 is about 1974.7479710447.

The spelling of 7700785540 in words is "seven billion, seven hundred million, seven hundred eighty-five thousand, five hundred forty".