51049217943794 has 16 divisors (see below), whose sum is σ = 87556767300288. Its totient is φ = 21867280698192.

The previous prime is 51049217943739. The next prime is 51049217943811. The reversal of 51049217943794 is 49734971294015.

It is a super-2 number, since 2×51049217943794² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51049217943794.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 912934664 + ... + 912990579.

It is an arithmetic number, because the mean of its divisors is an integer number (5472297956268).

Almost surely, 2^{51049217943794} is an apocalyptic number.

51049217943794 is a deficient number, since it is larger than the sum of its proper divisors (36507549356494).

51049217943794 is a wasteful number, since it uses less digits than its factorization.

51049217943794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825927249.

The product of its (nonzero) digits is 68584320, while the sum is 65.

The spelling of 51049217943794 in words is "fifty-one trillion, forty-nine billion, two hundred seventeen million, nine hundred forty-three thousand, seven hundred ninety-four".