13494740940072 has 72 divisors (see below), whose sum is σ = 42515319044250. Its totient is φ = 3855640267584.

The previous prime is 13494740940061. The next prime is 13494740940073. The reversal of 13494740940072 is 27004904749431.

It is a happy number.

13494740940072 is a `hidden beast` number, since 1 + 3 + 494 + 7 + 40 + 9 + 40 + 0 + 72 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9494076912516 + 4000664027556 = 3081246^2 + 2000166^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (13494740940073) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1912516447 + ... + 1912523502.

Almost surely, 2^{13494740940072} is an apocalyptic number.

13494740940072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13494740940072 is an abundant number, since it is smaller than the sum of its proper divisors (29020578104178).

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

13494740940072 is a wasteful number, since it uses less digits than its factorization.

13494740940072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3825039975 (or 3825039961 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The spelling of 13494740940072 in words is "thirteen trillion, four hundred ninety-four billion, seven hundred forty million, nine hundred forty thousand, seventy-two".