90668250001 has 12 divisors (see below), whose sum is σ = 105562770852. Its totient is φ = 77648191488.

The previous prime is 90668249999. The next prime is 90668250073. The reversal of 90668250001 is 10005286609.

It can be written as a sum of positive squares in 2 ways, for example, as 55979560000 + 34688690001 = 236600^2 + 186249^2 .

It is not a de Polignac number, because 90668250001 - 2¹ = 90668249999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90668650001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 745920 + ... + 858913.

It is an arithmetic number, because the mean of its divisors is an integer number (8796897571).

Almost surely, 2^90668250001 is an apocalyptic number.

It is an amenable number.

90668250001 is a deficient number, since it is larger than the sum of its proper divisors (14894520851).

90668250001 is a wasteful number, since it uses less digits than its factorization.

90668250001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606000 (or 1605993 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 90668250001 in words is "ninety billion, six hundred sixty-eight million, two hundred fifty thousand, one".