100562421655 has 16 divisors (see below), whose sum is σ = 121826594304. Its totient is φ = 79683125760.

The previous prime is 100562421649. The next prime is 100562421679. The reversal of 100562421655 is 556124265001.

It is not a de Polignac number, because 100562421655 - 2⁷ = 100562421527 is a prime.

It is a super-2 number, since 2×100562421655² (a number of 23 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 770617 + ... + 891613.

It is an arithmetic number, because the mean of its divisors is an integer number (7614162144).

Almost surely, 2^100562421655 is an apocalyptic number.

100562421655 is a deficient number, since it is larger than the sum of its proper divisors (21264172649).

100562421655 is a wasteful number, since it uses less digits than its factorization.

100562421655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122586.

The product of its (nonzero) digits is 72000, while the sum is 37.

Adding to 100562421655 its reverse (556124265001), we get a palindrome (656686686656).

The spelling of 100562421655 in words is "one hundred billion, five hundred sixty-two million, four hundred twenty-one thousand, six hundred fifty-five".