90470566405 has 4 divisors (see below), whose sum is σ = 108564679692. Its totient is φ = 72376453120.

The previous prime is 90470566393. The next prime is 90470566409. The reversal of 90470566405 is 50466507409.

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

It can be written as a sum of positive squares in 2 ways, for example, as 68125698081 + 22344868324 = 261009^2 + 149482^2 .

It is not a de Polignac number, because 90470566405 - 2¹⁷ = 90470435333 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 (90470566409) 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, 9047056636 + ... + 9047056645.

It is an arithmetic number, because the mean of its divisors is an integer number (27141169923).

Almost surely, 2^90470566405 is an apocalyptic number.

It is an amenable number.

90470566405 is a deficient number, since it is larger than the sum of its proper divisors (18094113287).

90470566405 is a wasteful number, since it uses less digits than its factorization.

90470566405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18094113286.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 90470566405 in words is "ninety billion, four hundred seventy million, five hundred sixty-six thousand, four hundred five".