21092501419 has 4 divisors (see below), whose sum is σ = 23010001560. Its totient is φ = 19175001280.

The previous prime is 21092501411. The next prime is 21092501447. The reversal of 21092501419 is 91410529012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21092501419 - 2³ = 21092501411 is a prime.

It is a super-2 number, since 2×21092501419² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21092501411) 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, 958750054 + ... + 958750075.

It is an arithmetic number, because the mean of its divisors is an integer number (5752500390).

Almost surely, 2^21092501419 is an apocalyptic number.

21092501419 is a deficient number, since it is larger than the sum of its proper divisors (1917500141).

21092501419 is a wasteful number, since it uses less digits than its factorization.

21092501419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917500140.

The product of its (nonzero) digits is 6480, while the sum is 34.

The spelling of 21092501419 in words is "twenty-one billion, ninety-two million, five hundred one thousand, four hundred nineteen".