66614731402 has 16 divisors (see below), whose sum is σ = 102686976072. Its totient is φ = 32386867200.

The previous prime is 66614731399. The next prime is 66614731409. The reversal of 66614731402 is 20413741666.

It can be written as a sum of positive squares in 4 ways, for example, as 62225801401 + 4388930001 = 249451^2 + 66249^2 .

It is not an unprimeable number, because it can be changed into a prime (66614731409) 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, 162663 + ... + 399610.

Almost surely, 2^66614731402 is an apocalyptic number.

66614731402 is a deficient number, since it is larger than the sum of its proper divisors (36072244670).

66614731402 is a wasteful number, since it uses less digits than its factorization.

66614731402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563913.

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 66614731402 in words is "sixty-six billion, six hundred fourteen million, seven hundred thirty-one thousand, four hundred two".