90504491177455 has 4 divisors (see below), whose sum is σ = 108605389412952. Its totient is φ = 72403592941960.

The previous prime is 90504491177413. The next prime is 90504491177459. The reversal of 90504491177455 is 55477119440509.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 90504491177455 - 2¹⁷ = 90504491046383 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90504491177393 and 90504491177402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90504491177459) 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, 9050449117741 + ... + 9050449117750.

It is an arithmetic number, because the mean of its divisors is an integer number (27151347353238).

Almost surely, 2^{90504491177455} is an apocalyptic number.

90504491177455 is a deficient number, since it is larger than the sum of its proper divisors (18100898235497).

90504491177455 is a wasteful number, since it uses less digits than its factorization.

90504491177455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18100898235496.

The product of its (nonzero) digits is 31752000, while the sum is 61.

The spelling of 90504491177455 in words is "ninety trillion, five hundred four billion, four hundred ninety-one million, one hundred seventy-seven thousand, four hundred fifty-five".