13700665402 has 24 divisors (see below), whose sum is σ = 21479643900. Its totient is φ = 6553346688.

The previous prime is 13700665399. The next prime is 13700665417. The reversal of 13700665402 is 20456600731.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 7997546041 + 5703119361 = 89429^2 + 75519^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145974 + ... + 220702.

Almost surely, 2^13700665402 is an apocalyptic number.

13700665402 is a deficient number, since it is larger than the sum of its proper divisors (7778978498).

13700665402 is a wasteful number, since it uses less digits than its factorization.

13700665402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74898 (or 74869 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The spelling of 13700665402 in words is "thirteen billion, seven hundred million, six hundred sixty-five thousand, four hundred two".