1551554553044 has 24 divisors (see below), whose sum is σ = 2735060217120. Its totient is φ = 770122389344.

The previous prime is 1551554553037. The next prime is 1551554553061. The reversal of 1551554553044 is 4403554551551.

It is a self number, because there is not a number n which added to its sum of digits gives 1551554553044.

It is a congruent 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, 1245134 + ... + 2157189.

It is an arithmetic number, because the mean of its divisors is an integer number (113960842380).

Almost surely, 2^{1551554553044} is an apocalyptic number.

It is an amenable number.

1551554553044 is a deficient number, since it is larger than the sum of its proper divisors (1183505664076).

1551554553044 is a wasteful number, since it uses less digits than its factorization.

1551554553044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3403159 (or 3403157 counting only the distinct ones).

The product of its (nonzero) digits is 3000000, while the sum is 47.

The spelling of 1551554553044 in words is "one trillion, five hundred fifty-one billion, five hundred fifty-four million, five hundred fifty-three thousand, forty-four".