100215050657 has 8 divisors (see below), whose sum is σ = 100433025000. Its totient is φ = 99997213824.

The previous prime is 100215050641. The next prime is 100215050723. The reversal of 100215050657 is 756050512001.

It can be written as a sum of positive squares in 4 ways, for example, as 7349521 + 100207701136 = 2711^2 + 316556^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100215050657 - 2⁴ = 100215050641 is a prime.

It is a super-2 number, since 2×100215050657² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100215050627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1498469 + ... + 1563917.

It is an arithmetic number, because the mean of its divisors is an integer number (12554128125).

Almost surely, 2^100215050657 is an apocalyptic number.

It is an amenable number.

100215050657 is a deficient number, since it is larger than the sum of its proper divisors (217974343).

100215050657 is an equidigital number, since it uses as much as digits as its factorization.

100215050657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68755.

The product of its (nonzero) digits is 10500, while the sum is 32.

Adding to 100215050657 its reverse (756050512001), we get a palindrome (856265562658).

The spelling of 100215050657 in words is "one hundred billion, two hundred fifteen million, fifty thousand, six hundred fifty-seven".