51413200899194 has 4 divisors (see below), whose sum is σ = 77119801348794. Its totient is φ = 25706600449596.

The previous prime is 51413200899187. The next prime is 51413200899211. The reversal of 51413200899194 is 49199800231415.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 44040145875625 + 7373055023569 = 6636275^2 + 2715337^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12853300224797 + ... + 12853300224800.

Almost surely, 2^{51413200899194} is an apocalyptic number.

51413200899194 is a deficient number, since it is larger than the sum of its proper divisors (25706600449600).

51413200899194 is a wasteful number, since it uses less digits than its factorization.

51413200899194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25706600449599.

The product of its (nonzero) digits is 2799360, while the sum is 56.

The spelling of 51413200899194 in words is "fifty-one trillion, four hundred thirteen billion, two hundred million, eight hundred ninety-nine thousand, one hundred ninety-four".