21415157482 has 8 divisors (see below), whose sum is σ = 34012308996. Its totient is φ = 10077721152.

The previous prime is 21415157473. The next prime is 21415157531. The reversal of 21415157482 is 28475151412.

It can be written as a sum of positive squares in 2 ways, for example, as 17374139721 + 4041017761 = 131811^2 + 63569^2 .

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, 314928753 + ... + 314928820.

Almost surely, 2^21415157482 is an apocalyptic number.

21415157482 is a deficient number, since it is larger than the sum of its proper divisors (12597151514).

21415157482 is a wasteful number, since it uses less digits than its factorization.

21415157482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629857592.

The product of its digits is 89600, while the sum is 40.

The spelling of 21415157482 in words is "twenty-one billion, four hundred fifteen million, one hundred fifty-seven thousand, four hundred eighty-two".