21830797495 has 16 divisors (see below), whose sum is σ = 28868206752. Its totient is φ = 15746290560.

The previous prime is 21830797493. The next prime is 21830797529. The reversal of 21830797495 is 59479703812.

It is a happy number.

It is not a de Polignac number, because 21830797495 - 2¹ = 21830797493 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 (21830797493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3902536 + ... + 3908125.

It is an arithmetic number, because the mean of its divisors is an integer number (1804262922).

Almost surely, 2^21830797495 is an apocalyptic number.

21830797495 is a deficient number, since it is larger than the sum of its proper divisors (7037409257).

21830797495 is a wasteful number, since it uses less digits than its factorization.

21830797495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7810722.

The product of its (nonzero) digits is 3810240, while the sum is 55.

The spelling of 21830797495 in words is "twenty-one billion, eight hundred thirty million, seven hundred ninety-seven thousand, four hundred ninety-five".