90155336823 has 16 divisors (see below), whose sum is σ = 136083529440. Its totient is φ = 58969527552.

The previous prime is 90155336809. The next prime is 90155336837. The reversal of 90155336823 is 32863355109.

It is a happy number.

90155336823 is a `hidden beast` number, since 90 + 1 + 5 + 533 + 6 + 8 + 23 = 666.

It is an interprime number because it is at equal distance from previous prime (90155336809) and next prime (90155336837).

It is not a de Polignac number, because 90155336823 - 2²⁵ = 90121782391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90155336123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31499386 + ... + 31502247.

It is an arithmetic number, because the mean of its divisors is an integer number (8505220590).

Almost surely, 2^90155336823 is an apocalyptic number.

90155336823 is a deficient number, since it is larger than the sum of its proper divisors (45928192617).

90155336823 is a wasteful number, since it uses less digits than its factorization.

90155336823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63001695 (or 63001689 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The spelling of 90155336823 in words is "ninety billion, one hundred fifty-five million, three hundred thirty-six thousand, eight hundred twenty-three".