51631354262146 has 32 divisors (see below), whose sum is σ = 78732136929600. Its totient is φ = 25390848461760.

The previous prime is 51631354262143. The next prime is 51631354262179. The reversal of 51631354262146 is 64126245313615.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 51631354262146.

It is not an unprimeable number, because it can be changed into a prime (51631354262143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198742216 + ... + 199001836.

It is an arithmetic number, because the mean of its divisors is an integer number (2460379279050).

Almost surely, 2^{51631354262146} is an apocalyptic number.

51631354262146 is a deficient number, since it is larger than the sum of its proper divisors (27100782667454).

51631354262146 is a wasteful number, since it uses less digits than its factorization.

51631354262146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266434.

The product of its digits is 3110400, while the sum is 49.

The spelling of 51631354262146 in words is "fifty-one trillion, six hundred thirty-one billion, three hundred fifty-four million, two hundred sixty-two thousand, one hundred forty-six".