140248656639 has 48 divisors (see below), whose sum is σ = 249399259200. Its totient is φ = 73957045248.

The previous prime is 140248656593. The next prime is 140248656649. The reversal of 140248656639 is 936656842041.

140248656639 is a `hidden beast` number, since 1 + 4 + 0 + 2 + 48 + 6 + 566 + 39 = 666.

It is not a de Polignac number, because 140248656639 - 2¹¹ = 140248654591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140248656649) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3245527 + ... + 3288455.

It is an arithmetic number, because the mean of its divisors is an integer number (5195817900).

Almost surely, 2^140248656639 is an apocalyptic number.

140248656639 is a deficient number, since it is larger than the sum of its proper divisors (109150602561).

140248656639 is a wasteful number, since it uses less digits than its factorization.

140248656639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46944 (or 46941 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 54.

The spelling of 140248656639 in words is "one hundred forty billion, two hundred forty-eight million, six hundred fifty-six thousand, six hundred thirty-nine".