21141672495 has 32 divisors (see below), whose sum is σ = 36190778880. Its totient is φ = 10506983040.

The previous prime is 21141672491. The next prime is 21141672499. The reversal of 21141672495 is 59427614112.

It is an interprime number because it is at equal distance from previous prime (21141672491) and next prime (21141672499).

It is not a de Polignac number, because 21141672495 - 2² = 21141672491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21141672491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 590659 + ... + 625428.

It is an arithmetic number, because the mean of its divisors is an integer number (1130961840).

Almost surely, 2^21141672495 is an apocalyptic number.

21141672495 is a deficient number, since it is larger than the sum of its proper divisors (15049106385).

21141672495 is a wasteful number, since it uses less digits than its factorization.

21141672495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216175.

The product of its digits is 120960, while the sum is 42.

The spelling of 21141672495 in words is "twenty-one billion, one hundred forty-one million, six hundred seventy-two thousand, four hundred ninety-five".