51442216101 has 16 divisors (see below), whose sum is σ = 77983033920. Its totient is φ = 33497256240.

The previous prime is 51442216081. The next prime is 51442216117. The reversal of 51442216101 is 10161224415.

51442216101 is a `hidden beast` number, since 5 + 1 + 4 + 42 + 2 + 1 + 610 + 1 = 666.

It is not a de Polignac number, because 51442216101 - 2⁵ = 51442216069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51442216141) 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, 22153110 + ... + 22155431.

It is an arithmetic number, because the mean of its divisors is an integer number (4873939620).

Almost surely, 2^51442216101 is an apocalyptic number.

It is an amenable number.

51442216101 is a deficient number, since it is larger than the sum of its proper divisors (26540817819).

51442216101 is a wasteful number, since it uses less digits than its factorization.

51442216101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44308593 (or 44308587 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The spelling of 51442216101 in words is "fifty-one billion, four hundred forty-two million, two hundred sixteen thousand, one hundred one".