51887697742 has 16 divisors (see below), whose sum is σ = 78414802560. Its totient is φ = 25749860472.

The previous prime is 51887697737. The next prime is 51887697791. The reversal of 51887697742 is 24779678815.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135109 + ... + 349327.

It is an arithmetic number, because the mean of its divisors is an integer number (4900925160).

Almost surely, 2^51887697742 is an apocalyptic number.

51887697742 is a deficient number, since it is larger than the sum of its proper divisors (26527104818).

51887697742 is a wasteful number, since it uses less digits than its factorization.

51887697742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215127.

The product of its digits is 47416320, while the sum is 64.

The spelling of 51887697742 in words is "fifty-one billion, eight hundred eighty-seven million, six hundred ninety-seven thousand, seven hundred forty-two".