140640364636 has 24 divisors (see below), whose sum is σ = 260256608640. Its totient is φ = 66391987200.

The previous prime is 140640364621. The next prime is 140640364637. The reversal of 140640364636 is 636463046041.

It is a junction number, because it is equal to n+sod(n) for n = 140640364592 and 140640364601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140640364637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13826581 + ... + 13836748.

It is an arithmetic number, because the mean of its divisors is an integer number (10844025360).

Almost surely, 2^140640364636 is an apocalyptic number.

It is an amenable number.

140640364636 is a deficient number, since it is larger than the sum of its proper divisors (119616244004).

140640364636 is a wasteful number, since it uses less digits than its factorization.

140640364636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27663405 (or 27663403 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 43.

The spelling of 140640364636 in words is "one hundred forty billion, six hundred forty million, three hundred sixty-four thousand, six hundred thirty-six".