20193845882157 has 24 divisors (see below), whose sum is σ = 29184656150520. Its totient is φ = 13455288453120.

The previous prime is 20193845882123. The next prime is 20193845882167. The reversal of 20193845882157 is 75128854839102.

20193845882157 is a `hidden beast` number, since 2 + 0 + 1 + 9 + 38 + 4 + 588 + 2 + 15 + 7 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9880171439076 + 10313674443081 = 3143274^2 + 3211491^2 .

It is not a de Polignac number, because 20193845882157 - 2²⁰ = 20193844833581 is a prime.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20193845882094 and 20193845882103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20193845882117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133402969 + ... + 133554257.

It is an arithmetic number, because the mean of its divisors is an integer number (1216027339605).

Almost surely, 2^{20193845882157} is an apocalyptic number.

It is an amenable number.

20193845882157 is a deficient number, since it is larger than the sum of its proper divisors (8990810268363).

20193845882157 is a wasteful number, since it uses less digits than its factorization.

20193845882157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159213 (or 159210 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 63.

The spelling of 20193845882157 in words is "twenty trillion, one hundred ninety-three billion, eight hundred forty-five million, eight hundred eighty-two thousand, one hundred fifty-seven".