140327768581 has 64 divisors (see below), whose sum is σ = 190979389440. Its totient is φ = 99563639040.

The previous prime is 140327768561. The next prime is 140327768593. The reversal of 140327768581 is 185867723041.

It is a cyclic number.

It is not a de Polignac number, because 140327768581 - 2⁵ = 140327768549 is a prime.

It is a super-2 number, since 2×140327768581² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140327768561) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 92138286 + ... + 92139808.

It is an arithmetic number, because the mean of its divisors is an integer number (2984052960).

Almost surely, 2^140327768581 is an apocalyptic number.

140327768581 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140327768581 is a deficient number, since it is larger than the sum of its proper divisors (50651620859).

140327768581 is a wasteful number, since it uses less digits than its factorization.

140327768581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2746.

The product of its (nonzero) digits is 2257920, while the sum is 52.

The spelling of 140327768581 in words is "one hundred forty billion, three hundred twenty-seven million, seven hundred sixty-eight thousand, five hundred eighty-one".