20757763033 has 12 divisors (see below), whose sum is σ = 24268137600. Its totient is φ = 17702951112.

The previous prime is 20757763027. The next prime is 20757763043. The reversal of 20757763033 is 33036775702.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-20757763033 is a prime.

It is a super-2 number, since 2×20757763033² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20757763043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1054641 + ... + 1074142.

It is an arithmetic number, because the mean of its divisors is an integer number (2022344800).

Almost surely, 2^20757763033 is an apocalyptic number.

It is an amenable number.

20757763033 is a deficient number, since it is larger than the sum of its proper divisors (3510374567).

20757763033 is a wasteful number, since it uses less digits than its factorization.

20757763033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128996 (or 2128989 counting only the distinct ones).

The product of its (nonzero) digits is 555660, while the sum is 43.

The spelling of 20757763033 in words is "twenty billion, seven hundred fifty-seven million, seven hundred sixty-three thousand, thirty-three".