100050055011661 has 4 divisors (see below), whose sum is σ = 100246617006300. Its totient is φ = 99853493017024.

The previous prime is 100050055011587. The next prime is 100050055011713. The reversal of 100050055011661 is 166110550050001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64011104481636 + 36038950530025 = 8000694^2 + 6003245^2 .

It is a cyclic number.

It is not a de Polignac number, because 100050055011661 - 2²³ = 100050046623053 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 (100050055111661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98280996556 + ... + 98280997573.

It is an arithmetic number, because the mean of its divisors is an integer number (25061654251575).

Almost surely, 2^{100050055011661} is an apocalyptic number.

It is an amenable number.

100050055011661 is a deficient number, since it is larger than the sum of its proper divisors (196561994639).

100050055011661 is an equidigital number, since it uses as much as digits as its factorization.

100050055011661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196561994638.

The product of its (nonzero) digits is 4500, while the sum is 31.

The spelling of 100050055011661 in words is "one hundred trillion, fifty billion, fifty-five million, eleven thousand, six hundred sixty-one".