20351685033 has 12 divisors (see below), whose sum is σ = 30675003840. Its totient is φ = 12977885976.

The previous prime is 20351684993. The next prime is 20351685049. The reversal of 20351685033 is 33058615302.

It is not a de Polignac number, because 20351685033 - 2¹⁰ = 20351684009 is a prime.

It is a super-2 number, since 2×20351685033² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20351685073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49158453 + ... + 49158866.

It is an arithmetic number, because the mean of its divisors is an integer number (2556250320).

Almost surely, 2^20351685033 is an apocalyptic number.

20351685033 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20351685033 is a deficient number, since it is larger than the sum of its proper divisors (10323318807).

20351685033 is a wasteful number, since it uses less digits than its factorization.

20351685033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98317348 (or 98317345 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 20351685033 in words is "twenty billion, three hundred fifty-one million, six hundred eighty-five thousand, thirty-three".