100551001050551 has 16 divisors (see below), whose sum is σ = 108065336371200. Its totient is φ = 93266388023328.

The previous prime is 100551001050527. The next prime is 100551001050569. The reversal of 100551001050551 is 155050100155001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 100551001050551 - 2²⁶ = 100550933941687 is a prime.

It is a super-2 number, since 2×100551001050551² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100551001050151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103747331 + ... + 104712036.

It is an arithmetic number, because the mean of its divisors is an integer number (6754083523200).

Almost surely, 2^{100551001050551} is an apocalyptic number.

100551001050551 is a deficient number, since it is larger than the sum of its proper divisors (7514335320649).

100551001050551 is a wasteful number, since it uses less digits than its factorization.

100551001050551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208459918.

The product of its (nonzero) digits is 3125, while the sum is 29.

The spelling of 100551001050551 in words is "one hundred trillion, five hundred fifty-one billion, one million, fifty thousand, five hundred fifty-one".