90933961607 has 4 divisors (see below), whose sum is σ = 91224485760. Its totient is φ = 90643437456.

The previous prime is 90933961589. The next prime is 90933961667. The reversal of 90933961607 is 70616933909.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 90933961607 - 2¹² = 90933957511 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 (90933961667) 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, 145261607 + ... + 145262232.

It is an arithmetic number, because the mean of its divisors is an integer number (22806121440).

Almost surely, 2^90933961607 is an apocalyptic number.

90933961607 is a deficient number, since it is larger than the sum of its proper divisors (290524153).

90933961607 is a wasteful number, since it uses less digits than its factorization.

90933961607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290524152.

The product of its (nonzero) digits is 1653372, while the sum is 53.

The spelling of 90933961607 in words is "ninety billion, nine hundred thirty-three million, nine hundred sixty-one thousand, six hundred seven".