20353133757 has 72 divisors (see below), whose sum is σ = 31582528992. Its totient is φ = 11647634240.

The previous prime is 20353133743. The next prime is 20353133809. The reversal of 20353133757 is 75733135302.

It is not a de Polignac number, because 20353133757 - 2⁴ = 20353133741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20353133707) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 15937603 + ... + 15938879.

It is an arithmetic number, because the mean of its divisors is an integer number (438646236).

Almost surely, 2^20353133757 is an apocalyptic number.

It is an amenable number.

20353133757 is a deficient number, since it is larger than the sum of its proper divisors (11229395235).

20353133757 is a wasteful number, since it uses less digits than its factorization.

20353133757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431 (or 1397 counting only the distinct ones).

The product of its (nonzero) digits is 198450, while the sum is 39.

The spelling of 20353133757 in words is "twenty billion, three hundred fifty-three million, one hundred thirty-three thousand, seven hundred fifty-seven".