140264321663 has 4 divisors (see below), whose sum is σ = 145101022440. Its totient is φ = 135427620888.

The previous prime is 140264321629. The next prime is 140264321723. The reversal of 140264321663 is 366123462041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366123462041 = 400903 ⋅913247.

It is a cyclic number.

It is not a de Polignac number, because 140264321663 - 2²⁸ = 139995886207 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 (140264321063) 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, 2418350345 + ... + 2418350402.

It is an arithmetic number, because the mean of its divisors is an integer number (36275255610).

Almost surely, 2^140264321663 is an apocalyptic number.

140264321663 is a deficient number, since it is larger than the sum of its proper divisors (4836700777).

140264321663 is an equidigital number, since it uses as much as digits as its factorization.

140264321663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4836700776.

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 140264321663 in words is "one hundred forty billion, two hundred sixty-four million, three hundred twenty-one thousand, six hundred sixty-three".