140335442549 has 4 divisors (see below), whose sum is σ = 143599057536. Its totient is φ = 137071827564.

The previous prime is 140335442509. The next prime is 140335442603. The reversal of 140335442549 is 945244533041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 945244533041 = 7933 ⋅119153477.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140335442549 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 (140335442509) 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, 1631807429 + ... + 1631807514.

It is an arithmetic number, because the mean of its divisors is an integer number (35899764384).

Almost surely, 2^140335442549 is an apocalyptic number.

It is an amenable number.

140335442549 is a deficient number, since it is larger than the sum of its proper divisors (3263614987).

140335442549 is an equidigital number, since it uses as much as digits as its factorization.

140335442549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3263614986.

The product of its (nonzero) digits is 1036800, while the sum is 44.

The spelling of 140335442549 in words is "one hundred forty billion, three hundred thirty-five million, four hundred forty-two thousand, five hundred forty-nine".