7770404040 has 128 divisors (see below), whose sum is σ = 27361532160. Its totient is φ = 1728082944.

The previous prime is 7770404039. The next prime is 7770404063. The reversal of 7770404040 is 404040777.

It is a junction number, because it is equal to n+sod(n) for n = 7770403992 and 7770404010.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93927 + ... + 156086.

It is an arithmetic number, because the mean of its divisors is an integer number (213761970).

Almost surely, 2^7770404040 is an apocalyptic number.

7770404040 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7770404040 is an abundant number, since it is smaller than the sum of its proper divisors (19591128120).

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

7770404040 is a wasteful number, since it uses less digits than its factorization.

7770404040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250071 (or 250067 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 33.

The square root of 7770404040 is about 88149.8952920535. The cubic root of 7770404040 is about 1980.6809921613.

The spelling of 7770404040 in words is "seven billion, seven hundred seventy million, four hundred four thousand, forty".