2564743503 has 8 divisors (see below), whose sum is σ = 3908180608. Its totient is φ = 1465567704.

The previous prime is 2564743487. The next prime is 2564743507. The reversal of 2564743503 is 3053474652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2564743503 - 2⁴ = 2564743487 is a prime.

It is a super-2 number, since 2×2564743503² = 13155818472361422018, 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 (2564743507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61065301 + ... + 61065342.

It is an arithmetic number, because the mean of its divisors is an integer number (488522576).

Almost surely, 2^2564743503 is an apocalyptic number.

2564743503 is a deficient number, since it is larger than the sum of its proper divisors (1343437105).

2564743503 is a wasteful number, since it uses less digits than its factorization.

2564743503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122130653.

The product of its (nonzero) digits is 302400, while the sum is 39.

The square root of 2564743503 is about 50643.2967232584. The cubic root of 2564743503 is about 1368.8251606024.

The spelling of 2564743503 in words is "two billion, five hundred sixty-four million, seven hundred forty-three thousand, five hundred three".