51020033142 has 16 divisors (see below), whose sum is σ = 109889302320. Its totient is φ = 15698471712.

The previous prime is 51020033101. The next prime is 51020033149. The reversal of 51020033142 is 24133002015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51020033149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327051417 + ... + 327051572.

It is an arithmetic number, because the mean of its divisors is an integer number (6868081395).

Almost surely, 2^51020033142 is an apocalyptic number.

51020033142 is an abundant number, since it is smaller than the sum of its proper divisors (58869269178).

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

51020033142 is a wasteful number, since it uses less digits than its factorization.

51020033142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654103007.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 51020033142 its reverse (24133002015), we get a palindrome (75153035157).

The spelling of 51020033142 in words is "fifty-one billion, twenty million, thirty-three thousand, one hundred forty-two".