90474530678647 has 4 divisors (see below), whose sum is σ = 95796561895056. Its totient is φ = 85152499462240.

The previous prime is 90474530678627. The next prime is 90474530678683. The reversal of 90474530678647 is 74687603547409.

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 90474530678647 - 2²³ = 90474522290039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90474530678617) 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, 2661015608179 + ... + 2661015608212.

It is an arithmetic number, because the mean of its divisors is an integer number (23949140473764).

Almost surely, 2^{90474530678647} is an apocalyptic number.

90474530678647 is a deficient number, since it is larger than the sum of its proper divisors (5322031216409).

90474530678647 is a wasteful number, since it uses less digits than its factorization.

90474530678647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5322031216408.

The product of its (nonzero) digits is 853493760, while the sum is 70.

The spelling of 90474530678647 in words is "ninety trillion, four hundred seventy-four billion, five hundred thirty million, six hundred seventy-eight thousand, six hundred forty-seven".