5260742978 has 4 divisors (see below), whose sum is σ = 7891114470. Its totient is φ = 2630371488.

The previous prime is 5260742959. The next prime is 5260742983. The reversal of 5260742978 is 8792470625.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3761736889 + 1499006089 = 61333^2 + 38717^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1315185743 + ... + 1315185746.

Almost surely, 2^5260742978 is an apocalyptic number.

5260742978 is a deficient number, since it is larger than the sum of its proper divisors (2630371492).

5260742978 is a wasteful number, since it uses less digits than its factorization.

5260742978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2630371491.

The product of its (nonzero) digits is 1693440, while the sum is 50.

The square root of 5260742978 is about 72530.9794363760. The cubic root of 5260742978 is about 1739.1980029303.

The spelling of 5260742978 in words is "five billion, two hundred sixty million, seven hundred forty-two thousand, nine hundred seventy-eight".