51311052013502 has 16 divisors (see below), whose sum is σ = 79450238183424. Its totient is φ = 24827657355000.

The previous prime is 51311052013493. The next prime is 51311052013517. The reversal of 51311052013502 is 20531025011315.

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, 1267127 + ... + 10209197.

It is an arithmetic number, because the mean of its divisors is an integer number (4965639886464).

Almost surely, 2^{51311052013502} is an apocalyptic number.

51311052013502 is a deficient number, since it is larger than the sum of its proper divisors (28139186169922).

51311052013502 is a wasteful number, since it uses less digits than its factorization.

51311052013502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9034655.

The product of its (nonzero) digits is 4500, while the sum is 29.

Adding to 51311052013502 its reverse (20531025011315), we get a palindrome (71842077024817).

The spelling of 51311052013502 in words is "fifty-one trillion, three hundred eleven billion, fifty-two million, thirteen thousand, five hundred two".