51011236123860 has 24 divisors (see below), whose sum is σ = 142831461146976. Its totient is φ = 13602996299680.

The previous prime is 51011236123849. The next prime is 51011236123877. The reversal of 51011236123860 is 6832163211015.

It is a super-2 number, since 2×51011236123860² (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, 425093634306 + ... + 425093634425.

It is an arithmetic number, because the mean of its divisors is an integer number (5951310881124).

Almost surely, 2^{51011236123860} is an apocalyptic number.

It is an amenable number.

51011236123860 is an abundant number, since it is smaller than the sum of its proper divisors (91820225023116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51011236123860 is a wasteful number, since it uses less digits than its factorization.

51011236123860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850187268743 (or 850187268741 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

Adding to 51011236123860 its reverse (6832163211015), we get a palindrome (57843399334875).

The spelling of 51011236123860 in words is "fifty-one trillion, eleven billion, two hundred thirty-six million, one hundred twenty-three thousand, eight hundred sixty".