140087400081 has 4 divisors (see below), whose sum is σ = 186783200112. Its totient is φ = 93391600052.

The previous prime is 140087400053. The next prime is 140087400133. The reversal of 140087400081 is 180004780041.

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 140087400081 - 2¹⁵ = 140087367313 is a prime.

It is a super-2 number, since 2×140087400081² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140087400031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23347900011 + ... + 23347900016.

It is an arithmetic number, because the mean of its divisors is an integer number (46695800028).

Almost surely, 2^140087400081 is an apocalyptic number.

It is an amenable number.

140087400081 is a deficient number, since it is larger than the sum of its proper divisors (46695800031).

140087400081 is an equidigital number, since it uses as much as digits as its factorization.

140087400081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46695800030.

The product of its (nonzero) digits is 7168, while the sum is 33.

The spelling of 140087400081 in words is "one hundred forty billion, eighty-seven million, four hundred thousand, eighty-one".