91000069000015 has 16 divisors (see below), whose sum is σ = 132141276666432. Its totient is φ = 58729456295424.

The previous prime is 91000069000007. The next prime is 91000069000021. The reversal of 91000069000015 is 51000096000019.

It is a cyclic number.

It is not a de Polignac number, because 91000069000015 - 2³ = 91000069000007 is a prime.

It is a congruent number.

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, 76470645624 + ... + 76470646813.

It is an arithmetic number, because the mean of its divisors is an integer number (8258829791652).

Almost surely, 2^{91000069000015} is an apocalyptic number.

91000069000015 is a deficient number, since it is larger than the sum of its proper divisors (41141207666417).

91000069000015 is a wasteful number, since it uses less digits than its factorization.

91000069000015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152941292466.

The product of its (nonzero) digits is 2430, while the sum is 31.

The spelling of 91000069000015 in words is "ninety-one trillion, sixty-nine million, fifteen", and thus it is an aban number and an uban number.