1340357985872 has 40 divisors (see below), whose sum is σ = 2668838058432. Its totient is φ = 651730707200.

The previous prime is 1340357985871. The next prime is 1340357985877. The reversal of 1340357985872 is 2785897530431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340357985871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3080918 + ... + 3488949.

Almost surely, 2^{1340357985872} is an apocalyptic number.

It is an amenable number.

1340357985872 is a deficient number, since it is larger than the sum of its proper divisors (1328480072560).

1340357985872 is a wasteful number, since it uses less digits than its factorization.

1340357985872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6570227 (or 6570221 counting only the distinct ones).

The product of its (nonzero) digits is 50803200, while the sum is 62.

The spelling of 1340357985872 in words is "one trillion, three hundred forty billion, three hundred fifty-seven million, nine hundred eighty-five thousand, eight hundred seventy-two".