20617207156101 has 16 divisors (see below), whose sum is σ = 27595327449600. Its totient is φ = 13692044162160.

The previous prime is 20617207156093. The next prime is 20617207156111. The reversal of 20617207156101 is 10165170271602.

It is not a de Polignac number, because 20617207156101 - 2³ = 20617207156093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20617207156101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20617207156111) 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, 11454051 + ... + 13131248.

It is an arithmetic number, because the mean of its divisors is an integer number (1724707965600).

Almost surely, 2^{20617207156101} is an apocalyptic number.

It is an amenable number.

20617207156101 is a deficient number, since it is larger than the sum of its proper divisors (6978120293499).

20617207156101 is a wasteful number, since it uses less digits than its factorization.

20617207156101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24586376.

The product of its (nonzero) digits is 35280, while the sum is 39.

The spelling of 20617207156101 in words is "twenty trillion, six hundred seventeen billion, two hundred seven million, one hundred fifty-six thousand, one hundred one".