90569698442 has 8 divisors (see below), whose sum is σ = 135896268996. Its totient is φ = 45270942112.

The previous prime is 90569698409. The next prime is 90569698481. The reversal of 90569698442 is 24489696509.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 80406840721 + 10162857721 = 283561^2 + 100811^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6945413 + ... + 6958440.

Almost surely, 2^90569698442 is an apocalyptic number.

90569698442 is a deficient number, since it is larger than the sum of its proper divisors (45326570554).

90569698442 is a wasteful number, since it uses less digits than its factorization.

90569698442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13907112.

The product of its (nonzero) digits is 33592320, while the sum is 62.

The spelling of 90569698442 in words is "ninety billion, five hundred sixty-nine million, six hundred ninety-eight thousand, four hundred forty-two".