51505022142 has 48 divisors (see below), whose sum is σ = 127619381760. Its totient is φ = 14706128016.

The previous prime is 51505022131. The next prime is 51505022167. The reversal of 51505022142 is 24122050515.

51505022142 is a `hidden beast` number, since 5 + 15 + 0 + 502 + 2 + 142 = 666.

It is a super-3 number, since 3×51505022142³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61959 + ... + 326877.

It is an arithmetic number, because the mean of its divisors is an integer number (2658737120).

Almost surely, 2^51505022142 is an apocalyptic number.

51505022142 is an abundant number, since it is smaller than the sum of its proper divisors (76114359618).

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

51505022142 is a wasteful number, since it uses less digits than its factorization.

51505022142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266477 (or 266474 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 51505022142 its reverse (24122050515), we get a palindrome (75627072657).

The spelling of 51505022142 in words is "fifty-one billion, five hundred five million, twenty-two thousand, one hundred forty-two".