140013431340520 has 32 divisors (see below), whose sum is σ = 315206313589800. Its totient is φ = 55974067100928.

The previous prime is 140013431340509. The next prime is 140013431340557. The reversal of 140013431340520 is 25043134310041.

It can be written as a sum of positive squares in 4 ways, for example, as 139887532688836 + 125898651684 = 11827406^2 + 354822^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 978222399 + ... + 978365518.

Almost surely, 2^{140013431340520} is an apocalyptic number.

140013431340520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140013431340520 is an abundant number, since it is smaller than the sum of its proper divisors (175192882249280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140013431340520 is a wasteful number, since it uses less digits than its factorization.

140013431340520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956589717 (or 1956589713 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 140013431340520 its reverse (25043134310041), we get a palindrome (165056565650561).

The spelling of 140013431340520 in words is "one hundred forty trillion, thirteen billion, four hundred thirty-one million, three hundred forty thousand, five hundred twenty".