2564715377 has 4 divisors (see below), whose sum is σ = 2931103296. Its totient is φ = 2198327460.

The previous prime is 2564715337. The next prime is 2564715397. The reversal of 2564715377 is 7735174652.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2564715377 - 2⁶ = 2564715313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2564715337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183193949 + ... + 183193962.

It is an arithmetic number, because the mean of its divisors is an integer number (732775824).

Almost surely, 2^2564715377 is an apocalyptic number.

It is an amenable number.

2564715377 is a deficient number, since it is larger than the sum of its proper divisors (366387919).

2564715377 is an equidigital number, since it uses as much as digits as its factorization.

2564715377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366387918.

The product of its digits is 1234800, while the sum is 47.

The square root of 2564715377 is about 50643.0190352037. The cubic root of 2564715377 is about 1368.8201568899.

The spelling of 2564715377 in words is "two billion, five hundred sixty-four million, seven hundred fifteen thousand, three hundred seventy-seven".