13921769450 has 48 divisors (see below), whose sum is σ = 26073700224. Its totient is φ = 5530291200.

The previous prime is 13921769441. The next prime is 13921769461. The reversal of 13921769450 is 5496712931.

It is a junction number, because it is equal to n+sod(n) for n = 13921769395 and 13921769404.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6086207 + ... + 6088493.

It is an arithmetic number, because the mean of its divisors is an integer number (543202088).

Almost surely, 2^13921769450 is an apocalyptic number.

13921769450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13921769450 is a deficient number, since it is larger than the sum of its proper divisors (12151930774).

13921769450 is a wasteful number, since it uses less digits than its factorization.

13921769450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3087 (or 3082 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 47.

The spelling of 13921769450 in words is "thirteen billion, nine hundred twenty-one million, seven hundred sixty-nine thousand, four hundred fifty".