5551551151551 has 32 divisors (see below), whose sum is σ = 8250221790720. Its totient is φ = 3689485111872.

The previous prime is 5551551151513. The next prime is 5551551151613. The reversal of 5551551151551 is 1551511551555.

5551551151551 is a `hidden beast` number, since 5 + 5 + 515 + 5 + 115 + 15 + 5 + 1 = 666.

It is not a de Polignac number, because 5551551151551 - 2⁹ = 5551551151039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5551551151497 and 5551551151506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5551551151501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11760555 + ... + 12223491.

It is an arithmetic number, because the mean of its divisors is an integer number (257819430960).

Almost surely, 2^{5551551151551} is an apocalyptic number.

5551551151551 is a deficient number, since it is larger than the sum of its proper divisors (2698670639169).

5551551151551 is a wasteful number, since it uses less digits than its factorization.

5551551151551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464332 (or 464326 counting only the distinct ones).

The product of its digits is 390625, while the sum is 45.

The spelling of 5551551151551 in words is "five trillion, five hundred fifty-one billion, five hundred fifty-one million, one hundred fifty-one thousand, five hundred fifty-one".