2158637999901 has 16 divisors (see below), whose sum is σ = 2961860318208. Its totient is φ = 1397721306800.

The previous prime is 2158637999879. The next prime is 2158637999927. The reversal of 2158637999901 is 1099997368512.

It is a cyclic number.

It is not a de Polignac number, because 2158637999901 - 2¹⁰ = 2158637998877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158637999971) 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, 58414695 + ... + 58451636.

It is an arithmetic number, because the mean of its divisors is an integer number (185116269888).

Almost surely, 2^{2158637999901} is an apocalyptic number.

It is an amenable number.

2158637999901 is a deficient number, since it is larger than the sum of its proper divisors (803222318307).

2158637999901 is a wasteful number, since it uses less digits than its factorization.

2158637999901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116866512.

The product of its (nonzero) digits is 66134880, while the sum is 69.

The spelling of 2158637999901 in words is "two trillion, one hundred fifty-eight billion, six hundred thirty-seven million, nine hundred ninety-nine thousand, nine hundred one".