51669401512587 has 32 divisors (see below), whose sum is σ = 74660516659200. Its totient is φ = 31673692839168.

The previous prime is 51669401512541. The next prime is 51669401512637. The reversal of 51669401512587 is 78521510496615.

It is not a de Polignac number, because 51669401512587 - 2¹⁴ = 51669401496203 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51669401512587.

It is not an unprimeable number, because it can be changed into a prime (51669401512087) 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, 29087883 + ... + 30813044.

It is an arithmetic number, because the mean of its divisors is an integer number (2333141145600).

Almost surely, 2^{51669401512587} is an apocalyptic number.

51669401512587 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

51669401512587 is a deficient number, since it is larger than the sum of its proper divisors (22991115146613).

51669401512587 is a wasteful number, since it uses less digits than its factorization.

51669401512587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59901395.

The product of its (nonzero) digits is 18144000, while the sum is 60.

The spelling of 51669401512587 in words is "fifty-one trillion, six hundred sixty-nine billion, four hundred one million, five hundred twelve thousand, five hundred eighty-seven".