90671782402 has 16 divisors (see below), whose sum is σ = 137343697920. Its totient is φ = 44891324352.

The previous prime is 90671782393. The next prime is 90671782451. The reversal of 90671782402 is 20428717609.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41743 + ... + 427885.

It is an arithmetic number, because the mean of its divisors is an integer number (8583981120).

Almost surely, 2^90671782402 is an apocalyptic number.

90671782402 is a deficient number, since it is larger than the sum of its proper divisors (46671915518).

90671782402 is a wasteful number, since it uses less digits than its factorization.

90671782402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387297.

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 90671782402 in words is "ninety billion, six hundred seventy-one million, seven hundred eighty-two thousand, four hundred two".