140638682493 has 6 divisors (see below), whose sum is σ = 203144763614. Its totient is φ = 93759121656.

The previous prime is 140638682479. The next prime is 140638682507. The reversal of 140638682493 is 394286836041.

140638682493 is a `hidden beast` number, since 1 + 40 + 6 + 38 + 6 + 82 + 493 = 666.

It is an interprime number because it is at equal distance from previous prime (140638682479) and next prime (140638682507).

It can be written as a sum of positive squares in only one way, i.e., 70576298244 + 70062384249 = 265662^2 + 264693^2 .

It is not a de Polignac number, because 140638682493 - 2²⁵ = 140605128061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140638682593) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7813260130 + ... + 7813260147.

Almost surely, 2^140638682493 is an apocalyptic number.

It is an amenable number.

140638682493 is a deficient number, since it is larger than the sum of its proper divisors (62506081121).

140638682493 is a wasteful number, since it uses less digits than its factorization.

140638682493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15626520283 (or 15626520280 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 54.

The spelling of 140638682493 in words is "one hundred forty billion, six hundred thirty-eight million, six hundred eighty-two thousand, four hundred ninety-three".