991101902702 has 16 divisors (see below), whose sum is σ = 1559956371840. Its totient is φ = 471357179832.

The previous prime is 991101902671. The next prime is 991101902717. The reversal of 991101902702 is 207209101199.

It is a self number, because there is not a number n which added to its sum of digits gives 991101902702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60175268 + ... + 60191735.

It is an arithmetic number, because the mean of its divisors is an integer number (97497273240).

Almost surely, 2^991101902702 is an apocalyptic number.

991101902702 is a deficient number, since it is larger than the sum of its proper divisors (568854469138).

991101902702 is a wasteful number, since it uses less digits than its factorization.

991101902702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120367207.

The product of its (nonzero) digits is 20412, while the sum is 41.

The spelling of 991101902702 in words is "nine hundred ninety-one billion, one hundred one million, nine hundred two thousand, seven hundred two".