51312524142 has 64 divisors (see below), whose sum is σ = 113032039680. Its totient is φ = 15399820800.

The previous prime is 51312524113. The next prime is 51312524143. The reversal of 51312524142 is 24142521315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51312524143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17457709 + ... + 17460647.

It is an arithmetic number, because the mean of its divisors is an integer number (1766125620).

Almost surely, 2^51312524142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51312524142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56516019840).

51312524142 is an abundant number, since it is smaller than the sum of its proper divisors (61719515538).

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

51312524142 is a wasteful number, since it uses less digits than its factorization.

51312524142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5409.

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

The spelling of 51312524142 in words is "fifty-one billion, three hundred twelve million, five hundred twenty-four thousand, one hundred forty-two".