21415315498 has 8 divisors (see below), whose sum is σ = 32123613600. Its totient is φ = 10707444300.

The previous prime is 21415315489. The next prime is 21415315501. The reversal of 21415315498 is 89451351412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94773 + ... + 227623.

It is an arithmetic number, because the mean of its divisors is an integer number (4015451700).

Almost surely, 2^21415315498 is an apocalyptic number.

21415315498 is a deficient number, since it is larger than the sum of its proper divisors (10708298102).

21415315498 is a wasteful number, since it uses less digits than its factorization.

21415315498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213452.

The product of its digits is 172800, while the sum is 43.

The spelling of 21415315498 in words is "twenty-one billion, four hundred fifteen million, three hundred fifteen thousand, four hundred ninety-eight".