30197261799987 has 32 divisors (see below), whose sum is σ = 41171004825600. Its totient is φ = 19682515730592.

The previous prime is 30197261799983. The next prime is 30197261800031. The reversal of 30197261799987 is 78999716279103.

It is not a de Polignac number, because 30197261799987 - 2² = 30197261799983 is a prime.

It is a super-2 number, since 2×30197261799987² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30197261799983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 609737608 + ... + 609787130.

It is an arithmetic number, because the mean of its divisors is an integer number (1286593900800).

Almost surely, 2^{30197261799987} is an apocalyptic number.

30197261799987 is a deficient number, since it is larger than the sum of its proper divisors (10973743025613).

30197261799987 is a wasteful number, since it uses less digits than its factorization.

30197261799987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74687.

The product of its (nonzero) digits is 648121824, while the sum is 78.

The spelling of 30197261799987 in words is "thirty trillion, one hundred ninety-seven billion, two hundred sixty-one million, seven hundred ninety-nine thousand, nine hundred eighty-seven".