51380772665198 has 8 divisors (see below), whose sum is σ = 77516657027208. Its totient is φ = 25541886989464.

The previous prime is 51380772665177. The next prime is 51380772665231. The reversal of 51380772665198 is 89156627708315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74249671136 + ... + 74249671827.

It is an arithmetic number, because the mean of its divisors is an integer number (9689582128401).

Almost surely, 2^{51380772665198} is an apocalyptic number.

51380772665198 is a deficient number, since it is larger than the sum of its proper divisors (26135884362010).

51380772665198 is a wasteful number, since it uses less digits than its factorization.

51380772665198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148499343138.

The product of its (nonzero) digits is 152409600, while the sum is 68.

The spelling of 51380772665198 in words is "fifty-one trillion, three hundred eighty billion, seven hundred seventy-two million, six hundred sixty-five thousand, one hundred ninety-eight".