51115300542 has 24 divisors (see below), whose sum is σ = 113106198816. Its totient is φ = 16675913376.

The previous prime is 51115300541. The next prime is 51115300571. The reversal of 51115300542 is 24500351115.

51115300542 is a `hidden beast` number, since 5 + 1 + 115 + 3 + 0 + 0 + 542 = 666.

It is a super-2 number, since 2×51115300542² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51115300541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30209143 + ... + 30210834.

It is an arithmetic number, because the mean of its divisors is an integer number (4712758284).

Almost surely, 2^51115300542 is an apocalyptic number.

51115300542 is an abundant number, since it is smaller than the sum of its proper divisors (61990898274).

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

51115300542 is a wasteful number, since it uses less digits than its factorization.

51115300542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60420032 (or 60420029 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 51115300542 its reverse (24500351115), we get a palindrome (75615651657).

It can be divided in two parts, 5111 and 5300542, that added together give a triangular number (5305653 = T₃₂₅₇).

The spelling of 51115300542 in words is "fifty-one billion, one hundred fifteen million, three hundred thousand, five hundred forty-two".