90950530198779 has 24 divisors (see below), whose sum is σ = 132408435474432. Its totient is φ = 60155795311920.

The previous prime is 90950530198777. The next prime is 90950530198793. The reversal of 90950530198779 is 97789103505909.

90950530198779 is a `hidden beast` number, since 9 + 0 + 9 + 5 + 0 + 530 + 1 + 9 + 87 + 7 + 9 = 666.

It is not a de Polignac number, because 90950530198779 - 2¹ = 90950530198777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90950530198777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 216172312 + ... + 216592634.

It is an arithmetic number, because the mean of its divisors is an integer number (5517018144768).

Almost surely, 2^{90950530198779} is an apocalyptic number.

90950530198779 is a deficient number, since it is larger than the sum of its proper divisors (41457905275653).

90950530198779 is a wasteful number, since it uses less digits than its factorization.

90950530198779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609767 (or 609764 counting only the distinct ones).

The product of its (nonzero) digits is 192893400, while the sum is 72.

The spelling of 90950530198779 in words is "ninety trillion, nine hundred fifty billion, five hundred thirty million, one hundred ninety-eight thousand, seven hundred seventy-nine".