90869529261 has 12 divisors (see below), whose sum is σ = 140940494592. Its totient is φ = 51925445208.

The previous prime is 90869529241. The next prime is 90869529271. The reversal of 90869529261 is 16292596809.

It is not a de Polignac number, because 90869529261 - 2⁵ = 90869529229 is a prime.

It is a super-2 number, since 2×90869529261² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90869529241) 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, 309079885 + ... + 309080178.

It is an arithmetic number, because the mean of its divisors is an integer number (11745041216).

Almost surely, 2^90869529261 is an apocalyptic number.

It is an amenable number.

90869529261 is a deficient number, since it is larger than the sum of its proper divisors (50070965331).

90869529261 is a wasteful number, since it uses less digits than its factorization.

90869529261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618160080 (or 618160073 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 57.

The spelling of 90869529261 in words is "ninety billion, eight hundred sixty-nine million, five hundred twenty-nine thousand, two hundred sixty-one".