45551615554 has 4 divisors (see below), whose sum is σ = 68327423334. Its totient is φ = 22775807776.

The previous prime is 45551615537. The next prime is 45551615561.

45551615554 is nontrivially palindromic in base 10.

45551615554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 23646135529 + 21905480025 = 153773^2 + 148005^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11387903887 + ... + 11387903890.

Almost surely, 2^45551615554 is an apocalyptic number.

45551615554 is a deficient number, since it is larger than the sum of its proper divisors (22775807780).

45551615554 is a wasteful number, since it uses less digits than its factorization.

45551615554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22775807779.

The product of its digits is 1500000, while the sum is 46.

The spelling of 45551615554 in words is "forty-five billion, five hundred fifty-one million, six hundred fifteen thousand, five hundred fifty-four".