551051016555 has 32 divisors (see below), whose sum is σ = 959292016704. Its totient is φ = 268489875456.

The previous prime is 551051016547. The next prime is 551051016557. The reversal of 551051016555 is 555610150155.

It is not a de Polignac number, because 551051016555 - 2³ = 551051016547 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (551051016557) 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, 14547594 + ... + 14585423.

It is an arithmetic number, because the mean of its divisors is an integer number (29977875522).

Almost surely, 2^551051016555 is an apocalyptic number.

551051016555 is a deficient number, since it is larger than the sum of its proper divisors (408241000149).

551051016555 is a wasteful number, since it uses less digits than its factorization.

551051016555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29133135.

The product of its (nonzero) digits is 93750, while the sum is 39.

The spelling of 551051016555 in words is "five hundred fifty-one billion, fifty-one million, sixteen thousand, five hundred fifty-five".