90646517012 has 6 divisors (see below), whose sum is σ = 158631404778. Its totient is φ = 45323258504.

The previous prime is 90646517009. The next prime is 90646517021. The reversal of 90646517012 is 21071564609.

It can be written as a sum of positive squares in only one way, i.e., 45674528656 + 44971988356 = 213716^2 + 212066^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11330814623 + ... + 11330814630.

It is an arithmetic number, because the mean of its divisors is an integer number (26438567463).

Almost surely, 2^90646517012 is an apocalyptic number.

It is an amenable number.

90646517012 is a deficient number, since it is larger than the sum of its proper divisors (67984887766).

90646517012 is a wasteful number, since it uses less digits than its factorization.

90646517012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22661629257 (or 22661629255 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 90646517012 in words is "ninety billion, six hundred forty-six million, five hundred seventeen thousand, twelve".