140077878793 has 2 divisors, whose sum is σ = 140077878794. Its totient is φ = 140077878792.

The previous prime is 140077878751. The next prime is 140077878797. The reversal of 140077878793 is 397878770041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106430580169 + 33647298624 = 326237^2 + 183432^2 .

It is an emirp because it is prime and its reverse (397878770041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140077878793 is a prime.

It is not a weakly prime, because it can be changed into another prime (140077878797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70038939396 + 70038939397.

It is an arithmetic number, because the mean of its divisors is an integer number (70038939397).

Almost surely, 2^140077878793 is an apocalyptic number.

It is an amenable number.

140077878793 is a deficient number, since it is larger than the sum of its proper divisors (1).

140077878793 is an equidigital number, since it uses as much as digits as its factorization.

140077878793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16595712, while the sum is 61.

The spelling of 140077878793 in words is "one hundred forty billion, seventy-seven million, eight hundred seventy-eight thousand, seven hundred ninety-three".