90719169279 has 4 divisors (see below), whose sum is σ = 120958892376. Its totient is φ = 60479446184.

The previous prime is 90719169251. The next prime is 90719169283. The reversal of 90719169279 is 97296191709.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90719169279 - 2³⁶ = 21999692543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90719169239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15119861544 + ... + 15119861549.

It is an arithmetic number, because the mean of its divisors is an integer number (30239723094).

Almost surely, 2^90719169279 is an apocalyptic number.

90719169279 is a deficient number, since it is larger than the sum of its proper divisors (30239723097).

90719169279 is a wasteful number, since it uses less digits than its factorization.

90719169279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30239723096.

The product of its (nonzero) digits is 3857868, while the sum is 60.

The spelling of 90719169279 in words is "ninety billion, seven hundred nineteen million, one hundred sixty-nine thousand, two hundred seventy-nine".