626107541057 has 4 divisors (see below), whose sum is σ = 626720771796. Its totient is φ = 625494310320.

The previous prime is 626107541009. The next prime is 626107541077. The reversal of 626107541057 is 750145701626.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 750145701626 = 2 ⋅375072850813.

It can be written as a sum of positive squares in 2 ways, for example, as 359041838401 + 267065702656 = 599201^2 + 516784^2 .

It is a cyclic number.

It is not a de Polignac number, because 626107541057 - 2¹² = 626107536961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 626107540999 and 626107541017.

It is not an unprimeable number, because it can be changed into a prime (626107541077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306613838 + ... + 306615879.

It is an arithmetic number, because the mean of its divisors is an integer number (156680192949).

Almost surely, 2^626107541057 is an apocalyptic number.

It is an amenable number.

626107541057 is a deficient number, since it is larger than the sum of its proper divisors (613230739).

626107541057 is a wasteful number, since it uses less digits than its factorization.

626107541057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613230738.

The product of its (nonzero) digits is 352800, while the sum is 44.

The spelling of 626107541057 in words is "six hundred twenty-six billion, one hundred seven million, five hundred forty-one thousand, fifty-seven".