51690890472001 has 16 divisors (see below), whose sum is σ = 57849792137280. Its totient is φ = 45780895782720.

The previous prime is 51690890471989. The next prime is 51690890472019. The reversal of 51690890472001 is 10027409809615.

It is a cyclic number.

It is not a de Polignac number, because 51690890472001 - 2⁹ = 51690890471489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51690890472001.

It is not an unprimeable number, because it can be changed into a prime (51690890479001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140282670 + ... + 140650663.

It is an arithmetic number, because the mean of its divisors is an integer number (3615612008580).

Almost surely, 2^{51690890472001} is an apocalyptic number.

It is an amenable number.

51690890472001 is a deficient number, since it is larger than the sum of its proper divisors (6158901665279).

51690890472001 is a wasteful number, since it uses less digits than its factorization.

51690890472001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280933776.

The product of its (nonzero) digits is 1088640, while the sum is 52.

It can be divided in two parts, 516908 and 90472001, that added together give a palindrome (90988909).

The spelling of 51690890472001 in words is "fifty-one trillion, six hundred ninety billion, eight hundred ninety million, four hundred seventy-two thousand, one".