13215354154440 has 64 divisors (see below), whose sum is σ = 39648097123200. Its totient is φ = 3523913582592.

The previous prime is 13215354154423. The next prime is 13215354154441. The reversal of 13215354154440 is 4445145351231.

It is a junction number, because it is equal to n+sod(n) for n = 13215354154392 and 13215354154401.

It is not an unprimeable number, because it can be changed into a prime (13215354154441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469780 + ... + 5162499.

It is an arithmetic number, because the mean of its divisors is an integer number (619501517550).

Almost surely, 2^{13215354154440} is an apocalyptic number.

13215354154440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13215354154440 is an abundant number, since it is smaller than the sum of its proper divisors (26432742968760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13215354154440 is a wasteful number, since it uses less digits than its factorization.

13215354154440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5651846 (or 5651842 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 42.

The spelling of 13215354154440 in words is "thirteen trillion, two hundred fifteen billion, three hundred fifty-four million, one hundred fifty-four thousand, four hundred forty".