51244439037 has 32 divisors (see below), whose sum is σ = 75380544000. Its totient is φ = 30707046720.

The previous prime is 51244438981. The next prime is 51244439069. The reversal of 51244439037 is 73093444215.

It is a happy number.

It is not a de Polignac number, because 51244439037 - 2¹⁶ = 51244373501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51244439037.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51244431037) 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, 1832839 + ... + 1860587.

It is an arithmetic number, because the mean of its divisors is an integer number (2355642000).

Almost surely, 2^51244439037 is an apocalyptic number.

It is an amenable number.

51244439037 is a deficient number, since it is larger than the sum of its proper divisors (24136104963).

51244439037 is a wasteful number, since it uses less digits than its factorization.

51244439037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28393.

The product of its (nonzero) digits is 362880, while the sum is 42.

The spelling of 51244439037 in words is "fifty-one billion, two hundred forty-four million, four hundred thirty-nine thousand, thirty-seven".