90572799650 has 24 divisors (see below), whose sum is σ = 170495118864. Its totient is φ = 35792622800.

The previous prime is 90572799643. The next prime is 90572799673. The reversal of 90572799650 is 5699727509.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 90572799650.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10908236 + ... + 10916535.

It is an arithmetic number, because the mean of its divisors is an integer number (7103963286).

Almost surely, 2^90572799650 is an apocalyptic number.

90572799650 is a deficient number, since it is larger than the sum of its proper divisors (79922319214).

90572799650 is a wasteful number, since it uses less digits than its factorization.

90572799650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21824866 (or 21824861 counting only the distinct ones).

The product of its (nonzero) digits is 10716300, while the sum is 59.

The spelling of 90572799650 in words is "ninety billion, five hundred seventy-two million, seven hundred ninety-nine thousand, six hundred fifty".