100100505100550 has 48 divisors (see below), whose sum is σ = 186294821701632. Its totient is φ = 40017004711200.

The previous prime is 100100505100529. The next prime is 100100505100559. The reversal of 100100505100550 is 55001505001001.

It is a happy number.

It is a super-2 number, since 2×100100505100550² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100100505100559) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1672129919 + ... + 1672189781.

It is an arithmetic number, because the mean of its divisors is an integer number (3881142118784).

Almost surely, 2^{100100505100550} is an apocalyptic number.

100100505100550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100100505100550 is a deficient number, since it is larger than the sum of its proper divisors (86194316601082).

100100505100550 is a wasteful number, since it uses less digits than its factorization.

100100505100550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78693 (or 78688 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 23.

The spelling of 100100505100550 in words is "one hundred trillion, one hundred billion, five hundred five million, one hundred thousand, five hundred fifty".