551992319951 has 4 divisors (see below), whose sum is σ = 552208875000. Its totient is φ = 551775764904.

The previous prime is 551992319933. The next prime is 551992319953. The reversal of 551992319951 is 159913299155.

551992319951 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 is a cyclic number.

It is not a de Polignac number, because 551992319951 - 2²⁶ = 551925211087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551992319953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108273701 + ... + 108278798.

It is an arithmetic number, because the mean of its divisors is an integer number (138052218750).

Almost surely, 2^551992319951 is an apocalyptic number.

551992319951 is a deficient number, since it is larger than the sum of its proper divisors (216555049).

551992319951 is a wasteful number, since it uses less digits than its factorization.

551992319951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216555048.

The product of its digits is 4920750, while the sum is 59.

The spelling of 551992319951 in words is "five hundred fifty-one billion, nine hundred ninety-two million, three hundred nineteen thousand, nine hundred fifty-one".