90451451722 has 8 divisors (see below), whose sum is σ = 141576185376. Its totient is φ = 43259389932.

The previous prime is 90451451621. The next prime is 90451451771. The reversal of 90451451722 is 22715415409.

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, 983167908 + ... + 983167999.

It is an arithmetic number, because the mean of its divisors is an integer number (17697023172).

Almost surely, 2^90451451722 is an apocalyptic number.

90451451722 is a deficient number, since it is larger than the sum of its proper divisors (51124733654).

90451451722 is a wasteful number, since it uses less digits than its factorization.

90451451722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1966335932.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 90451451722 in words is "ninety billion, four hundred fifty-one million, four hundred fifty-one thousand, seven hundred twenty-two".