90910713698990 has 16 divisors (see below), whose sum is σ = 172251878587920. Its totient is φ = 34450375717440.

The previous prime is 90910713698953. The next prime is 90910713699059. The reversal of 90910713698990 is 9989631701909.

It is a happy number.

It is a congruent number.

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, 239238720071 + ... + 239238720450.

It is an arithmetic number, because the mean of its divisors is an integer number (10765742411745).

Almost surely, 2^{90910713698990} is an apocalyptic number.

90910713698990 is a deficient number, since it is larger than the sum of its proper divisors (81341164888930).

90910713698990 is a wasteful number, since it uses less digits than its factorization.

90910713698990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478477440547.

The product of its (nonzero) digits is 59521392, while the sum is 71.

The spelling of 90910713698990 in words is "ninety trillion, nine hundred ten billion, seven hundred thirteen million, six hundred ninety-eight thousand, nine hundred ninety".