140351985811 has 2 divisors, whose sum is σ = 140351985812. Its totient is φ = 140351985810.

The previous prime is 140351985791. The next prime is 140351985827. The reversal of 140351985811 is 118589153041.

It is a strong prime.

It is an emirp because it is prime and its reverse (118589153041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140351985811 - 2²¹ = 140349888659 is a prime.

It is a super-2 number, since 2×140351985811² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (140351986811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70175992905 + 70175992906.

It is an arithmetic number, because the mean of its divisors is an integer number (70175992906).

Almost surely, 2^140351985811 is an apocalyptic number.

140351985811 is a deficient number, since it is larger than the sum of its proper divisors (1).

140351985811 is an equidigital number, since it uses as much as digits as its factorization.

140351985811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 46.

The spelling of 140351985811 in words is "one hundred forty billion, three hundred fifty-one million, nine hundred eighty-five thousand, eight hundred eleven".