51190204387 has 8 divisors (see below), whose sum is σ = 58504514816. Its totient is φ = 43876249992.

The previous prime is 51190204363. The next prime is 51190204391. The reversal of 51190204387 is 78340209115.

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

It is a cyclic number.

It is not a de Polignac number, because 51190204387 - 2⁷ = 51190204259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51190204337) 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, 393448 + ... + 507130.

It is an arithmetic number, because the mean of its divisors is an integer number (7313064352).

Almost surely, 2^51190204387 is an apocalyptic number.

51190204387 is a deficient number, since it is larger than the sum of its proper divisors (7314310429).

51190204387 is a wasteful number, since it uses less digits than its factorization.

51190204387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178017.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 51190204387 in words is "fifty-one billion, one hundred ninety million, two hundred four thousand, three hundred eighty-seven".