5311745978 has 16 divisors (see below), whose sum is σ = 9933655104. Its totient is φ = 2069511360.

The previous prime is 5311745927. The next prime is 5311745981. The reversal of 5311745978 is 8795471135.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17245775 + ... + 17246082.

It is an arithmetic number, because the mean of its divisors is an integer number (620853444).

Almost surely, 2^5311745978 is an apocalyptic number.

5311745978 is a deficient number, since it is larger than the sum of its proper divisors (4621909126).

5311745978 is a wasteful number, since it uses less digits than its factorization.

5311745978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34491877.

The product of its digits is 1058400, while the sum is 50.

The square root of 5311745978 is about 72881.7259537670. The cubic root of 5311745978 is about 1744.8004553395.

The spelling of 5311745978 in words is "five billion, three hundred eleven million, seven hundred forty-five thousand, nine hundred seventy-eight".