45709802978 has 24 divisors (see below), whose sum is σ = 80042829804. Its totient is φ = 19520188800.

The previous prime is 45709802933. The next prime is 45709802981. The reversal of 45709802978 is 87920890754.

It can be written as a sum of positive squares in 2 ways, for example, as 42471851569 + 3237951409 = 206087^2 + 56903^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 802403 + ... + 857478.

Almost surely, 2^45709802978 is an apocalyptic number.

45709802978 is a deficient number, since it is larger than the sum of its proper divisors (34333026826).

45709802978 is a wasteful number, since it uses less digits than its factorization.

45709802978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660178 (or 1660171 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 59.

The spelling of 45709802978 in words is "forty-five billion, seven hundred nine million, eight hundred two thousand, nine hundred seventy-eight".