90634154091 has 8 divisors (see below), whose sum is σ = 130141349520. Its totient is φ = 55774864032.

The previous prime is 90634154089. The next prime is 90634154213. The reversal of 90634154091 is 19045143609.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90634154091 - 2¹ = 90634154089 is a prime.

It is a super-2 number, since 2×90634154091² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90634154011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1161976296 + ... + 1161976373.

It is an arithmetic number, because the mean of its divisors is an integer number (16267668690).

Almost surely, 2^90634154091 is an apocalyptic number.

90634154091 is a deficient number, since it is larger than the sum of its proper divisors (39507195429).

90634154091 is a wasteful number, since it uses less digits than its factorization.

90634154091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323952685.

The product of its (nonzero) digits is 116640, while the sum is 42.

The spelling of 90634154091 in words is "ninety billion, six hundred thirty-four million, one hundred fifty-four thousand, ninety-one".