21928697383 has 8 divisors (see below), whose sum is σ = 22302714960. Its totient is φ = 21554758080.

The previous prime is 21928697381. The next prime is 21928697393. The reversal of 21928697383 is 38379682912.

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 21928697383 - 2¹ = 21928697381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21928697381) 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, 953941 + ... + 976657.

It is an arithmetic number, because the mean of its divisors is an integer number (2787839370).

Almost surely, 2^21928697383 is an apocalyptic number.

21928697383 is a deficient number, since it is larger than the sum of its proper divisors (374017577).

21928697383 is a wasteful number, since it uses less digits than its factorization.

21928697383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39137.

The product of its digits is 7838208, while the sum is 58.

The spelling of 21928697383 in words is "twenty-one billion, nine hundred twenty-eight million, six hundred ninety-seven thousand, three hundred eighty-three".