90809143774 has 8 divisors (see below), whose sum is σ = 139111879968. Its totient is φ = 44438517120.

The previous prime is 90809143757. The next prime is 90809143783. The reversal of 90809143774 is 47734190809.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 483027267 + ... + 483027454.

It is an arithmetic number, because the mean of its divisors is an integer number (17388984996).

Almost surely, 2^90809143774 is an apocalyptic number.

90809143774 is a gapful number since it is divisible by the number (94) formed by its first and last digit.

90809143774 is a deficient number, since it is larger than the sum of its proper divisors (48302736194).

90809143774 is a wasteful number, since it uses less digits than its factorization.

90809143774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966054770.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 90809143774 in words is "ninety billion, eight hundred nine million, one hundred forty-three thousand, seven hundred seventy-four".