20274633653 has 8 divisors (see below), whose sum is σ = 22400618688. Its totient is φ = 18252355264.

The previous prime is 20274633641. The next prime is 20274633667. The reversal of 20274633653 is 35633647202.

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 20274633653 - 2⁴ = 20274633637 is a prime.

It is a super-2 number, since 2×20274633653² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20274633653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20274633053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25926251 + ... + 25927032.

It is an arithmetic number, because the mean of its divisors is an integer number (2800077336).

Almost surely, 2^20274633653 is an apocalyptic number.

20274633653 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20274633653 is a deficient number, since it is larger than the sum of its proper divisors (2125985035).

20274633653 is a wasteful number, since it uses less digits than its factorization.

20274633653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51853323.

The product of its (nonzero) digits is 544320, while the sum is 41.

The spelling of 20274633653 in words is "twenty billion, two hundred seventy-four million, six hundred thirty-three thousand, six hundred fifty-three".