20637974153 has 8 divisors (see below), whose sum is σ = 20921544000. Its totient is φ = 20355235888.

The previous prime is 20637974117. The next prime is 20637974179. The reversal of 20637974153 is 35147973602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20637974153 - 2³² = 16343006857 is a prime.

It is a super-3 number, since 3×20637974153³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20637974098 and 20637974107.

It is not an unprimeable number, because it can be changed into a prime (20637974113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157838 + ... + 257271.

It is an arithmetic number, because the mean of its divisors is an integer number (2615193000).

Almost surely, 2^20637974153 is an apocalyptic number.

It is an amenable number.

20637974153 is a deficient number, since it is larger than the sum of its proper divisors (283569847).

20637974153 is an equidigital number, since it uses as much as digits as its factorization.

20637974153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415791.

The product of its (nonzero) digits is 952560, while the sum is 47.

The spelling of 20637974153 in words is "twenty billion, six hundred thirty-seven million, nine hundred seventy-four thousand, one hundred fifty-three".