71444257630454 has 16 divisors (see below), whose sum is σ = 109468628983296. Its totient is φ = 34955021673000.

The previous prime is 71444257630441. The next prime is 71444257630507. The reversal of 71444257630454 is 45403675244417.

It is a super-2 number, since 2×71444257630454² (a number of 29 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 71444257630454.

It is a congruent number.

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, 76291352 + ... + 77222139.

It is an arithmetic number, because the mean of its divisors is an integer number (6841789311456).

Almost surely, 2^{71444257630454} is an apocalyptic number.

71444257630454 is a deficient number, since it is larger than the sum of its proper divisors (38024371352842).

71444257630454 is a wasteful number, since it uses less digits than its factorization.

71444257630454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153518491.

The product of its (nonzero) digits is 45158400, while the sum is 56.

The spelling of 71444257630454 in words is "seventy-one trillion, four hundred forty-four billion, two hundred fifty-seven million, six hundred thirty thousand, four hundred fifty-four".