100545545551 has 16 divisors (see below), whose sum is σ = 112649616000. Its totient is φ = 88966084000.

The previous prime is 100545545519. The next prime is 100545545563. The reversal of 100545545551 is 155545545001.

It is a cyclic number.

It is not a de Polignac number, because 100545545551 - 2⁵ = 100545545519 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 (100545545351) 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, 701401 + ... + 832498.

It is an arithmetic number, because the mean of its divisors is an integer number (7040601000).

Almost surely, 2^100545545551 is an apocalyptic number.

100545545551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100545545551 is a deficient number, since it is larger than the sum of its proper divisors (12104070449).

100545545551 is a wasteful number, since it uses less digits than its factorization.

100545545551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534070.

The product of its (nonzero) digits is 250000, while the sum is 40.

The spelling of 100545545551 in words is "one hundred billion, five hundred forty-five million, five hundred forty-five thousand, five hundred fifty-one".