13491505340 has 24 divisors (see below), whose sum is σ = 28495938240. Its totient is φ = 5365406528.

The previous prime is 13491505253. The next prime is 13491505369. The reversal of 13491505340 is 4350519431.

It is a self number, because there is not a number n which added to its sum of digits gives 13491505340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1946180 + ... + 1953099.

It is an arithmetic number, because the mean of its divisors is an integer number (1187330760).

Almost surely, 2^13491505340 is an apocalyptic number.

13491505340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13491505340 is an abundant number, since it is smaller than the sum of its proper divisors (15004432900).

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

13491505340 is a wasteful number, since it uses less digits than its factorization.

13491505340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3899461 (or 3899459 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 13491505340 in words is "thirteen billion, four hundred ninety-one million, five hundred five thousand, three hundred forty".