2577461978 has 32 divisors (see below), whose sum is σ = 4762087680. Its totient is φ = 1018863360.

The previous prime is 2577461969. The next prime is 2577462001. The reversal of 2577461978 is 8791647752.

2577461978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 266243 + ... + 275753.

It is an arithmetic number, because the mean of its divisors is an integer number (148815240).

Almost surely, 2^2577461978 is an apocalyptic number.

2577461978 is a deficient number, since it is larger than the sum of its proper divisors (2184625702).

2577461978 is a wasteful number, since it uses less digits than its factorization.

2577461978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11022.

The product of its digits is 5927040, while the sum is 56.

The square root of 2577461978 is about 50768.7106198296. The cubic root of 2577461978 is about 1371.0840830635.

The spelling of 2577461978 in words is "two billion, five hundred seventy-seven million, four hundred sixty-one thousand, nine hundred seventy-eight".