51531420122204 has 24 divisors (see below), whose sum is σ = 99038421846000. Its totient is φ = 23266168935680.

The previous prime is 51531420122167. The next prime is 51531420122323. The reversal of 51531420122204 is 40222102413515.

It is a super-2 number, since 2×51531420122204² (a number of 28 digits) contains 22 as substring.

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, 3930089549 + ... + 3930102660.

It is an arithmetic number, because the mean of its divisors is an integer number (4126600910250).

Almost surely, 2^{51531420122204} is an apocalyptic number.

It is an amenable number.

51531420122204 is a deficient number, since it is larger than the sum of its proper divisors (47507001723796).

51531420122204 is a wasteful number, since it uses less digits than its factorization.

51531420122204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7860192373 (or 7860192371 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 51531420122204 its reverse (40222102413515), we get a palindrome (91753522535719).

The spelling of 51531420122204 in words is "fifty-one trillion, five hundred thirty-one billion, four hundred twenty million, one hundred twenty-two thousand, two hundred four".