90278342562 has 32 divisors (see below), whose sum is σ = 184115861568. Its totient is φ = 29500526016.

The previous prime is 90278342537. The next prime is 90278342603. The reversal of 90278342562 is 26524387209.

It is a super-4 number, since 4×90278342562⁴ (a number of 45 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268713 + ... + 502755.

It is an arithmetic number, because the mean of its divisors is an integer number (5753620674).

Almost surely, 2^90278342562 is an apocalyptic number.

90278342562 is an abundant number, since it is smaller than the sum of its proper divisors (93837519006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90278342562 is a wasteful number, since it uses less digits than its factorization.

90278342562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235314.

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 90278342562 in words is "ninety billion, two hundred seventy-eight million, three hundred forty-two thousand, five hundred sixty-two".