90610856143 has 4 divisors (see below), whose sum is σ = 94550458608. Its totient is φ = 86671253680.

The previous prime is 90610856081. The next prime is 90610856153. The reversal of 90610856143 is 34165801609.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34165801609 = 38639 ⋅884231.

It is a cyclic number.

It is not a de Polignac number, because 90610856143 - 2¹⁷ = 90610725071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90610856143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90610856153) 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, 1969801198 + ... + 1969801243.

It is an arithmetic number, because the mean of its divisors is an integer number (23637614652).

Almost surely, 2^90610856143 is an apocalyptic number.

90610856143 is a deficient number, since it is larger than the sum of its proper divisors (3939602465).

90610856143 is a wasteful number, since it uses less digits than its factorization.

90610856143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939602464.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 90610856143 in words is "ninety billion, six hundred ten million, eight hundred fifty-six thousand, one hundred forty-three".