20757688195 has 16 divisors (see below), whose sum is σ = 27066055680. Its totient is φ = 15224652000.

The previous prime is 20757688187. The next prime is 20757688199. The reversal of 20757688195 is 59188675702.

It is not a de Polignac number, because 20757688195 - 2³ = 20757688187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20757688199) 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, 3521281 + ... + 3527170.

It is an arithmetic number, because the mean of its divisors is an integer number (1691628480).

Almost surely, 2^20757688195 is an apocalyptic number.

20757688195 is a deficient number, since it is larger than the sum of its proper divisors (6308367485).

20757688195 is a wasteful number, since it uses less digits than its factorization.

20757688195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7048506.

The product of its (nonzero) digits is 8467200, while the sum is 58.

The spelling of 20757688195 in words is "twenty billion, seven hundred fifty-seven million, six hundred eighty-eight thousand, one hundred ninety-five".