51512351548 has 12 divisors (see below), whose sum is σ = 103024703152. Its totient is φ = 22076722080.

The previous prime is 51512351531. The next prime is 51512351549. The reversal of 51512351548 is 84515321515.

51512351548 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 51512351548.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51512351549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 919863393 + ... + 919863448.

Almost surely, 2^51512351548 is an apocalyptic number.

It is an amenable number.

51512351548 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51512351548 is a wasteful number, since it uses less digits than its factorization.

51512351548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1839726852 (or 1839726850 counting only the distinct ones).

The product of its digits is 120000, while the sum is 40.

The spelling of 51512351548 in words is "fifty-one billion, five hundred twelve million, three hundred fifty-one thousand, five hundred forty-eight".