51554462919 has 16 divisors (see below), whose sum is σ = 68845158144. Its totient is φ = 34316744000.

The previous prime is 51554462903. The next prime is 51554462951. The reversal of 51554462919 is 91926445515.

It is a cyclic number.

It is not a de Polignac number, because 51554462919 - 2⁴ = 51554462903 is a prime.

It is a super-2 number, since 2×51554462919² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51554262919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9120244 + ... + 9125894.

It is an arithmetic number, because the mean of its divisors is an integer number (4302822384).

Almost surely, 2^51554462919 is an apocalyptic number.

51554462919 is a deficient number, since it is larger than the sum of its proper divisors (17290695225).

51554462919 is a wasteful number, since it uses less digits than its factorization.

51554462919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9798.

The product of its digits is 1944000, while the sum is 51.

The spelling of 51554462919 in words is "fifty-one billion, five hundred fifty-four million, four hundred sixty-two thousand, nine hundred nineteen".