90100000001 has 8 divisors (see below), whose sum is σ = 98461264224. Its totient is φ = 81767128320.

The previous prime is 90099999971. The next prime is 90100000009. The reversal of 90100000001 is 10000000109.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90100000001 - 2¹⁰ = 90099998977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (11).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90100000009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7091495 + ... + 7104188.

It is an arithmetic number, because the mean of its divisors is an integer number (12307658028).

Almost surely, 2^90100000001 is an apocalyptic number.

It is an amenable number.

90100000001 is a deficient number, since it is larger than the sum of its proper divisors (8361264223).

90100000001 is a wasteful number, since it uses less digits than its factorization.

90100000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14196271.

The product of its (nonzero) digits is 9, while the sum is 11.

The spelling of 90100000001 in words is "ninety billion, one hundred million, one", and thus it is an aban number.