140186728428957 has 48 divisors (see below), whose sum is σ = 231607932200320. Its totient is φ = 80041449628800.

The previous prime is 140186728428953. The next prime is 140186728429021. The reversal of 140186728428957 is 759824827681041.

140186728428957 is a `hidden beast` number, since 1 + 4 + 0 + 1 + 8 + 67 + 284 + 289 + 5 + 7 = 666.

It is not a de Polignac number, because 140186728428957 - 2² = 140186728428953 is a prime.

It is a super-2 number, since 2×140186728428957² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140186728428953) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 462601107 + ... + 462904047.

Almost surely, 2^{140186728428957} is an apocalyptic number.

It is an amenable number.

140186728428957 is a deficient number, since it is larger than the sum of its proper divisors (91421203771363).

140186728428957 is a wasteful number, since it uses less digits than its factorization.

140186728428957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308914 (or 308911 counting only the distinct ones).

The product of its (nonzero) digits is 433520640, while the sum is 72.

The spelling of 140186728428957 in words is "one hundred forty trillion, one hundred eighty-six billion, seven hundred twenty-eight million, four hundred twenty-eight thousand, nine hundred fifty-seven".