20743614881 has 8 divisors (see below), whose sum is σ = 22736648928. Its totient is φ = 18768456000.

The previous prime is 20743614833. The next prime is 20743614919. The reversal of 20743614881 is 18841634702.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20743614881 is a prime.

It is a super-2 number, since 2×20743614881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20743614181) 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, 4466360 + ... + 4471001.

It is an arithmetic number, because the mean of its divisors is an integer number (2842081116).

Almost surely, 2^20743614881 is an apocalyptic number.

It is an amenable number.

20743614881 is a deficient number, since it is larger than the sum of its proper divisors (1993034047).

20743614881 is a wasteful number, since it uses less digits than its factorization.

20743614881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8937583.

The product of its (nonzero) digits is 258048, while the sum is 44.

The spelling of 20743614881 in words is "twenty billion, seven hundred forty-three million, six hundred fourteen thousand, eight hundred eighty-one".