140221451523 has 16 divisors (see below), whose sum is σ = 191539488672. Its totient is φ = 91192608000.

The previous prime is 140221451501. The next prime is 140221451609. The reversal of 140221451523 is 325154122041.

It is not a de Polignac number, because 140221451523 - 2²⁹ = 139684580611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140221451023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1481893 + ... + 1573673.

It is an arithmetic number, because the mean of its divisors is an integer number (11971218042).

Almost surely, 2^140221451523 is an apocalyptic number.

140221451523 is a deficient number, since it is larger than the sum of its proper divisors (51318037149).

140221451523 is a wasteful number, since it uses less digits than its factorization.

140221451523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104246.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 140221451523 its reverse (325154122041), we get a palindrome (465375573564).

The spelling of 140221451523 in words is "one hundred forty billion, two hundred twenty-one million, four hundred fifty-one thousand, five hundred twenty-three".