140623021971 has 10 divisors (see below), whose sum is σ = 210066489732. Its totient is φ = 93748681260.

The previous prime is 140623021969. The next prime is 140623021999. The reversal of 140623021971 is 179120326041.

140623021971 is a `hidden beast` number, since 1 + 4 + 0 + 623 + 0 + 21 + 9 + 7 + 1 = 666.

It is not a de Polignac number, because 140623021971 - 2¹ = 140623021969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140623021471) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 868043265 + ... + 868043426.

Almost surely, 2^140623021971 is an apocalyptic number.

140623021971 is a deficient number, since it is larger than the sum of its proper divisors (69443467761).

140623021971 is an equidigital number, since it uses as much as digits as its factorization.

140623021971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736086703 (or 1736086694 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The spelling of 140623021971 in words is "one hundred forty billion, six hundred twenty-three million, twenty-one thousand, nine hundred seventy-one".