13721617354 has 32 divisors (see below), whose sum is σ = 22398114816. Its totient is φ = 6279022080.

The previous prime is 13721617333. The next prime is 13721617363. The reversal of 13721617354 is 45371612731.

It is a super-2 number, since 2×13721617354² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411927 + ... + 443989.

It is an arithmetic number, because the mean of its divisors is an integer number (699941088).

Almost surely, 2^13721617354 is an apocalyptic number.

13721617354 is a deficient number, since it is larger than the sum of its proper divisors (8676497462).

13721617354 is a wasteful number, since it uses less digits than its factorization.

13721617354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32430.

The product of its digits is 105840, while the sum is 40.

The spelling of 13721617354 in words is "thirteen billion, seven hundred twenty-one million, six hundred seventeen thousand, three hundred fifty-four".