90890571429171 has 12 divisors (see below), whose sum is σ = 131319293108640. Its totient is φ = 60578524060560.

The previous prime is 90890571429157. The next prime is 90890571429173. The reversal of 90890571429171 is 17192417509809.

90890571429171 is a `hidden beast` number, since 9 + 0 + 8 + 9 + 0 + 571 + 42 + 9 + 17 + 1 = 666.

It is not a de Polignac number, because 90890571429171 - 2¹⁸ = 90890571167027 is a prime.

It is a super-2 number, since 2×90890571429171² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 90890571429099 and 90890571429108.

It is not an unprimeable number, because it can be changed into a prime (90890571429173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1265814235 + ... + 1265886036.

It is an arithmetic number, because the mean of its divisors is an integer number (10943274425720).

Almost surely, 2^{90890571429171} is an apocalyptic number.

90890571429171 is a deficient number, since it is larger than the sum of its proper divisors (40428721679469).

90890571429171 is a wasteful number, since it uses less digits than its factorization.

90890571429171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2531704266 (or 2531704263 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 63.

The spelling of 90890571429171 in words is "ninety trillion, eight hundred ninety billion, five hundred seventy-one million, four hundred twenty-nine thousand, one hundred seventy-one".