140811434781 has 4 divisors (see below), whose sum is σ = 187748579712. Its totient is φ = 93874289852.

The previous prime is 140811434773. The next prime is 140811434783. The reversal of 140811434781 is 187434118041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 140811434781 - 2³ = 140811434773 is a prime.

It is a super-2 number, since 2×140811434781² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140811434783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23468572461 + ... + 23468572466.

It is an arithmetic number, because the mean of its divisors is an integer number (46937144928).

Almost surely, 2^140811434781 is an apocalyptic number.

It is an amenable number.

140811434781 is a deficient number, since it is larger than the sum of its proper divisors (46937144931).

140811434781 is an equidigital number, since it uses as much as digits as its factorization.

140811434781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46937144930.

The product of its (nonzero) digits is 86016, while the sum is 42.

The spelling of 140811434781 in words is "one hundred forty billion, eight hundred eleven million, four hundred thirty-four thousand, seven hundred eighty-one".