140832291821 has 32 divisors (see below), whose sum is σ = 155563480800. Its totient is φ = 126708793344.

The previous prime is 140832291799. The next prime is 140832291863. The reversal of 140832291821 is 128192238041.

It can be written as a sum of positive squares in 16 ways, for example, as 16540789321 + 124291502500 = 128611^2 + 352550^2 .

It is a cyclic number.

It is not a de Polignac number, because 140832291821 - 2⁶ = 140832291757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140832291521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30290705 + ... + 30295353.

It is an arithmetic number, because the mean of its divisors is an integer number (4861358775).

Almost surely, 2^140832291821 is an apocalyptic number.

It is an amenable number.

140832291821 is a deficient number, since it is larger than the sum of its proper divisors (14731188979).

140832291821 is a wasteful number, since it uses less digits than its factorization.

140832291821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5105.

The product of its (nonzero) digits is 55296, while the sum is 41.

The spelling of 140832291821 in words is "one hundred forty billion, eight hundred thirty-two million, two hundred ninety-one thousand, eight hundred twenty-one".