51658811843474 has 16 divisors (see below), whose sum is σ = 85353306068160. Its totient is φ = 23253304535760.

The previous prime is 51658811843423. The next prime is 51658811843477. The reversal of 51658811843474 is 47434811885615.

It is a super-2 number, since 2×51658811843474² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51658811843474.

It is not an unprimeable number, because it can be changed into a prime (51658811843477) 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, 11398676429 + ... + 11398680960.

It is an arithmetic number, because the mean of its divisors is an integer number (5334581629260).

Almost surely, 2^{51658811843474} is an apocalyptic number.

51658811843474 is a deficient number, since it is larger than the sum of its proper divisors (33694494224686).

51658811843474 is a wasteful number, since it uses less digits than its factorization.

51658811843474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22797357505.

The product of its digits is 103219200, while the sum is 65.

The spelling of 51658811843474 in words is "fifty-one trillion, six hundred fifty-eight billion, eight hundred eleven million, eight hundred forty-three thousand, four hundred seventy-four".