21889112953 has 8 divisors (see below), whose sum is σ = 21935801216. Its totient is φ = 21842460000.

The previous prime is 21889112951. The next prime is 21889112957. The reversal of 21889112953 is 35921198812.

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 21889112953 - 2¹ = 21889112951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21889112897 and 21889112906.

It is not an unprimeable number, because it can be changed into a prime (21889112951) 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, 1497028 + ... + 1511578.

It is an arithmetic number, because the mean of its divisors is an integer number (2741975152).

Almost surely, 2^21889112953 is an apocalyptic number.

It is an amenable number.

21889112953 is a deficient number, since it is larger than the sum of its proper divisors (46688263).

21889112953 is a wasteful number, since it uses less digits than its factorization.

21889112953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17655.

The product of its digits is 311040, while the sum is 49.

The spelling of 21889112953 in words is "twenty-one billion, eight hundred eighty-nine million, one hundred twelve thousand, nine hundred fifty-three".