21462002353 has 4 divisors (see below), whose sum is σ = 23413093488. Its totient is φ = 19510911220.

The previous prime is 21462002293. The next prime is 21462002357. The reversal of 21462002353 is 35320026412.

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 21462002353 - 2²⁵ = 21428447921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21462002357) 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, 975545551 + ... + 975545572.

It is an arithmetic number, because the mean of its divisors is an integer number (5853273372).

Almost surely, 2^21462002353 is an apocalyptic number.

It is an amenable number.

21462002353 is a deficient number, since it is larger than the sum of its proper divisors (1951091135).

21462002353 is a wasteful number, since it uses less digits than its factorization.

21462002353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951091134.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 21462002353 its reverse (35320026412), we get a palindrome (56782028765).

The spelling of 21462002353 in words is "twenty-one billion, four hundred sixty-two million, two thousand, three hundred fifty-three".