2564731477 has 16 divisors (see below), whose sum is σ = 3201725952. Its totient is φ = 1995905520.

The previous prime is 2564731451. The next prime is 2564731501. The reversal of 2564731477 is 7741374652.

It is not a de Polignac number, because 2564731477 - 2⁷ = 2564731349 is a prime.

It is a super-2 number, since 2×2564731477² = 13155695098229203058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564431477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39438 + ... + 81760.

It is an arithmetic number, because the mean of its divisors is an integer number (200107872).

Almost surely, 2^2564731477 is an apocalyptic number.

It is an amenable number.

2564731477 is a deficient number, since it is larger than the sum of its proper divisors (636994475).

2564731477 is a wasteful number, since it uses less digits than its factorization.

2564731477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43128.

The product of its digits is 987840, while the sum is 46.

The square root of 2564731477 is about 50643.1779907225. The cubic root of 2564731477 is about 1368.8230211400.

The spelling of 2564731477 in words is "two billion, five hundred sixty-four million, seven hundred thirty-one thousand, four hundred seventy-seven".