51513142242 has 32 divisors (see below), whose sum is σ = 103415889600. Its totient is φ = 17106182208.

The previous prime is 51513142231. The next prime is 51513142267. The reversal of 51513142242 is 24224131515.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3395109 + ... + 3410247.

It is an arithmetic number, because the mean of its divisors is an integer number (3231746550).

Almost surely, 2^51513142242 is an apocalyptic number.

51513142242 is an abundant number, since it is smaller than the sum of its proper divisors (51902747358).

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

51513142242 is a wasteful number, since it uses less digits than its factorization.

51513142242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17250.

The product of its digits is 9600, while the sum is 30.

Adding to 51513142242 its reverse (24224131515), we get a palindrome (75737273757).

The spelling of 51513142242 in words is "fifty-one billion, five hundred thirteen million, one hundred forty-two thousand, two hundred forty-two".