45205904778 has 16 divisors (see below), whose sum is σ = 90419926080. Its totient is φ = 15067282176.

The previous prime is 45205904759. The next prime is 45205904801. The reversal of 45205904778 is 87740950254.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 45205904778.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264550 + ... + 400497.

It is an arithmetic number, because the mean of its divisors is an integer number (5651245380).

Almost surely, 2^45205904778 is an apocalyptic number.

45205904778 is an abundant number, since it is smaller than the sum of its proper divisors (45214021302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45205904778 is a wasteful number, since it uses less digits than its factorization.

45205904778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676381.

The product of its (nonzero) digits is 2822400, while the sum is 51.

The spelling of 45205904778 in words is "forty-five billion, two hundred five million, nine hundred four thousand, seven hundred seventy-eight".