100261213045 has 24 divisors (see below), whose sum is σ = 140173006464. Its totient is φ = 68644177056.

The previous prime is 100261213033. The next prime is 100261213097. The reversal of 100261213045 is 540312162001.

It is a happy number.

It is not a de Polignac number, because 100261213045 - 2¹⁵ = 100261180277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 157737 + ... + 474766.

It is an arithmetic number, because the mean of its divisors is an integer number (5840541936).

Almost surely, 2^100261213045 is an apocalyptic number.

It is an amenable number.

100261213045 is a deficient number, since it is larger than the sum of its proper divisors (39911793419).

100261213045 is an equidigital number, since it uses as much as digits as its factorization.

100261213045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633169 (or 633162 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 100261213045 its reverse (540312162001), we get a palindrome (640573375046).

The spelling of 100261213045 in words is "one hundred billion, two hundred sixty-one million, two hundred thirteen thousand, forty-five".