100572065557 has 2 divisors, whose sum is σ = 100572065558. Its totient is φ = 100572065556.

The previous prime is 100572065497. The next prime is 100572065597. The reversal of 100572065557 is 755560275001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95927097841 + 4644967716 = 309721^2 + 68154^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100572065557 is a prime.

It is a super-2 number, since 2×100572065557² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100572065597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50286032778 + 50286032779.

It is an arithmetic number, because the mean of its divisors is an integer number (50286032779).

Almost surely, 2^100572065557 is an apocalyptic number.

It is an amenable number.

100572065557 is a deficient number, since it is larger than the sum of its proper divisors (1).

100572065557 is an equidigital number, since it uses as much as digits as its factorization.

100572065557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 367500, while the sum is 43.

The spelling of 100572065557 in words is "one hundred billion, five hundred seventy-two million, sixty-five thousand, five hundred fifty-seven".