13521402490 has 8 divisors (see below), whose sum is σ = 24338524500. Its totient is φ = 5408560992.

The previous prime is 13521402487. The next prime is 13521402491. The reversal of 13521402490 is 9420412531.

It can be written as a sum of positive squares in 2 ways, for example, as 12962505609 + 558896881 = 113853^2 + 23641^2 .

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

It is not an unprimeable number, because it can be changed into a prime (13521402491) 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, 676070115 + ... + 676070134.

Almost surely, 2^13521402490 is an apocalyptic number.

13521402490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13521402490 is a deficient number, since it is larger than the sum of its proper divisors (10817122010).

13521402490 is a wasteful number, since it uses less digits than its factorization.

13521402490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352140256.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 13521402490 in words is "thirteen billion, five hundred twenty-one million, four hundred two thousand, four hundred ninety".