90708790041 has 9 divisors (see below), whose sum is σ = 131025112959. Its totient is φ = 60471924336.

The previous prime is 90708789973. The next prime is 90708790049. The reversal of 90708790041 is 14009780709.

The square root of 90708790041 is 301179.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 44270264025 + 46438526016 = 210405^2 + 215496^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 90708790041 - 2³³ = 82118855449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90708790049) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 853341 + ... + 953733.

Almost surely, 2^90708790041 is an apocalyptic number.

90708790041 is the 301179-th square number.

90708790041 is the 150590-th centered octagonal number.

It is an amenable number.

90708790041 is a deficient number, since it is larger than the sum of its proper divisors (40316322918).

90708790041 is an frugal number, since it uses more digits than its factorization.

90708790041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200792 (or 100396 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 90708790041 in words is "ninety billion, seven hundred eight million, seven hundred ninety thousand, forty-one".