20653435157 has 16 divisors (see below), whose sum is σ = 22327963200. Its totient is φ = 19044230400.

The previous prime is 20653435147. The next prime is 20653435181. The reversal of 20653435157 is 75153435602.

It is a cyclic number.

It is not a de Polignac number, because 20653435157 - 2¹⁶ = 20653369621 is a prime.

It is a super-2 number, since 2×20653435157² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20653435147) 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, 22013 + ... + 204429.

It is an arithmetic number, because the mean of its divisors is an integer number (1395497700).

Almost surely, 2^20653435157 is an apocalyptic number.

It is an amenable number.

20653435157 is a deficient number, since it is larger than the sum of its proper divisors (1674528043).

20653435157 is a wasteful number, since it uses less digits than its factorization.

20653435157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182596.

The product of its (nonzero) digits is 378000, while the sum is 41.

The spelling of 20653435157 in words is "twenty billion, six hundred fifty-three million, four hundred thirty-five thousand, one hundred fifty-seven".