30691853001491 has 16 divisors (see below), whose sum is σ = 35258158742400. Its totient is φ = 26422730611200.

The previous prime is 30691853001473. The next prime is 30691853001521. The reversal of 30691853001491 is 19410035819603.

It is a de Polignac number, because none of the positive numbers 2^k-30691853001491 is a prime.

It is a super-3 number, since 3×30691853001491³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (30691853001451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28481486 + ... + 29539443.

It is an arithmetic number, because the mean of its divisors is an integer number (2203634921400).

Almost surely, 2^{30691853001491} is an apocalyptic number.

30691853001491 is a deficient number, since it is larger than the sum of its proper divisors (4566305740909).

30691853001491 is a wasteful number, since it uses less digits than its factorization.

30691853001491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58023490.

The product of its (nonzero) digits is 699840, while the sum is 50.

The spelling of 30691853001491 in words is "thirty trillion, six hundred ninety-one billion, eight hundred fifty-three million, one thousand, four hundred ninety-one".