21799300461 has 4 divisors (see below), whose sum is σ = 29065733952. Its totient is φ = 14532866972.

The previous prime is 21799300421. The next prime is 21799300487. The reversal of 21799300461 is 16400399712.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21799300461 - 2¹³ = 21799292269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21799300421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3633216741 + ... + 3633216746.

It is an arithmetic number, because the mean of its divisors is an integer number (7266433488).

Almost surely, 2^21799300461 is an apocalyptic number.

It is an amenable number.

21799300461 is a deficient number, since it is larger than the sum of its proper divisors (7266433491).

21799300461 is an equidigital number, since it uses as much as digits as its factorization.

21799300461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7266433490.

The product of its (nonzero) digits is 81648, while the sum is 42.

The spelling of 21799300461 in words is "twenty-one billion, seven hundred ninety-nine million, three hundred thousand, four hundred sixty-one".