100520661151 has 4 divisors (see below), whose sum is σ = 102168540904. Its totient is φ = 98872781400.

The previous prime is 100520661127. The next prime is 100520661161. The reversal of 100520661151 is 151166025001.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 100520661151 - 2⁷ = 100520661023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100520661161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 823939785 + ... + 823939906.

It is an arithmetic number, because the mean of its divisors is an integer number (25542135226).

Almost surely, 2^100520661151 is an apocalyptic number.

100520661151 is a deficient number, since it is larger than the sum of its proper divisors (1647879753).

100520661151 is an equidigital number, since it uses as much as digits as its factorization.

100520661151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647879752.

The product of its (nonzero) digits is 1800, while the sum is 28.

Adding to 100520661151 its reverse (151166025001), we get a palindrome (251686686152).

The spelling of 100520661151 in words is "one hundred billion, five hundred twenty million, six hundred sixty-one thousand, one hundred fifty-one".