51320450192 has 30 divisors (see below), whose sum is σ = 109294537254. Its totient is φ = 23327476480.

The previous prime is 51320450189. The next prime is 51320450309. The reversal of 51320450192 is 29105402315.

It can be written as a sum of positive squares in only one way, i.e., 42421169296 + 8899280896 = 205964^2 + 94336^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13252313 + ... + 13256184.

Almost surely, 2^51320450192 is an apocalyptic number.

It is an amenable number.

51320450192 is an abundant number, since it is smaller than the sum of its proper divisors (57974087062).

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

51320450192 is a wasteful number, since it uses less digits than its factorization.

51320450192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26508527 (or 26508510 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 51320450192 in words is "fifty-one billion, three hundred twenty million, four hundred fifty thousand, one hundred ninety-two".