90569375501 has 4 divisors (see below), whose sum is σ = 98802955104. Its totient is φ = 82335795900.

The previous prime is 90569375387. The next prime is 90569375543. The reversal of 90569375501 is 10557396509.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10557396509 = 11 ⋅959763319.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90569375501 is a prime.

It is a super-2 number, since 2×90569375501² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90569375501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90569375581) 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, 4116789785 + ... + 4116789806.

It is an arithmetic number, because the mean of its divisors is an integer number (24700738776).

Almost surely, 2^90569375501 is an apocalyptic number.

It is an amenable number.

90569375501 is a deficient number, since it is larger than the sum of its proper divisors (8233579603).

90569375501 is a wasteful number, since it uses less digits than its factorization.

90569375501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8233579602.

The product of its (nonzero) digits is 1275750, while the sum is 50.

The spelling of 90569375501 in words is "ninety billion, five hundred sixty-nine million, three hundred seventy-five thousand, five hundred one".