140445004013 has 4 divisors (see below), whose sum is σ = 140516992128. Its totient is φ = 140373015900.

The previous prime is 140445004009. The next prime is 140445004039. The reversal of 140445004013 is 310400544041.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 140445004013 - 2² = 140445004009 is a prime.

It is a super-2 number, since 2×140445004013² (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 (140445001013) 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, 35991131 + ... + 35995032.

It is an arithmetic number, because the mean of its divisors is an integer number (35129248032).

Almost surely, 2^140445004013 is an apocalyptic number.

It is an amenable number.

140445004013 is a deficient number, since it is larger than the sum of its proper divisors (71988115).

140445004013 is an equidigital number, since it uses as much as digits as its factorization.

140445004013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71988114.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 140445004013 its reverse (310400544041), we get a palindrome (450845548054).

The spelling of 140445004013 in words is "one hundred forty billion, four hundred forty-five million, four thousand, thirteen".