140103256657 has 24 divisors (see below), whose sum is σ = 175099026240. Its totient is φ = 109753300800.

The previous prime is 140103256627. The next prime is 140103256673. The reversal of 140103256657 is 756652301041.

It is a de Polignac number, because none of the positive numbers 2^k-140103256657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140103256607) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 466807 + ... + 705772.

It is an arithmetic number, because the mean of its divisors is an integer number (7295792760).

Almost surely, 2^140103256657 is an apocalyptic number.

It is an amenable number.

140103256657 is a deficient number, since it is larger than the sum of its proper divisors (34995769583).

140103256657 is a wasteful number, since it uses less digits than its factorization.

140103256657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172713 (or 1172700 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

Adding to 140103256657 its reverse (756652301041), we get a palindrome (896755557698).

The spelling of 140103256657 in words is "one hundred forty billion, one hundred three million, two hundred fifty-six thousand, six hundred fifty-seven".