626642083538774 has 4 divisors (see below), whose sum is σ = 939963125308164. Its totient is φ = 313321041769386.

The previous prime is 626642083538741. The next prime is 626642083538789. The reversal of 626642083538774 is 477835380246626.

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

It is a super-2 number, since 2×626642083538774² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 626642083538698 and 626642083538707.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156660520884692 + ... + 156660520884695.

It is an arithmetic number, because the mean of its divisors is an integer number (234990781327041).

Almost surely, 2^{626642083538774} is an apocalyptic number.

626642083538774 is a deficient number, since it is larger than the sum of its proper divisors (313321041769390).

626642083538774 is a wasteful number, since it uses less digits than its factorization.

626642083538774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313321041769389.

The product of its (nonzero) digits is 1950842880, while the sum is 71.

The spelling of 626642083538774 in words is "six hundred twenty-six trillion, six hundred forty-two billion, eighty-three million, five hundred thirty-eight thousand, seven hundred seventy-four".