140253715813 has 4 divisors (see below), whose sum is σ = 140490231948. Its totient is φ = 140017199680.

The previous prime is 140253715807. The next prime is 140253715831. The reversal of 140253715813 is 318517352041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 318517352041 = 7 ⋅45502478863.

It can be written as a sum of positive squares in 2 ways, for example, as 89711032324 + 50542683489 = 299518^2 + 224817^2 .

It is a cyclic number.

It is not a de Polignac number, because 140253715813 - 2⁵ = 140253715781 is a prime.

It is a super-2 number, since 2×140253715813² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140253715883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118257178 + ... + 118258363.

It is an arithmetic number, because the mean of its divisors is an integer number (35122557987).

Almost surely, 2^140253715813 is an apocalyptic number.

It is an amenable number.

140253715813 is a deficient number, since it is larger than the sum of its proper divisors (236516135).

140253715813 is an equidigital number, since it uses as much as digits as its factorization.

140253715813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236516134.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 140253715813 in words is "one hundred forty billion, two hundred fifty-three million, seven hundred fifteen thousand, eight hundred thirteen".