140797979457 has 4 divisors (see below), whose sum is σ = 187730639280. Its totient is φ = 93865319636.

The previous prime is 140797979453. The next prime is 140797979461. The reversal of 140797979457 is 754979797041.

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 an interprime number because it is at equal distance from previous prime (140797979453) and next prime (140797979461).

It is a cyclic number.

It is not a de Polignac number, because 140797979457 - 2² = 140797979453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140797979391 and 140797979400.

It is not an unprimeable number, because it can be changed into a prime (140797979453) 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, 23466329907 + ... + 23466329912.

It is an arithmetic number, because the mean of its divisors is an integer number (46932659820).

Almost surely, 2^140797979457 is an apocalyptic number.

It is an amenable number.

140797979457 is a deficient number, since it is larger than the sum of its proper divisors (46932659823).

140797979457 is an equidigital number, since it uses as much as digits as its factorization.

140797979457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46932659822.

The product of its (nonzero) digits is 140026320, while the sum is 69.

The spelling of 140797979457 in words is "one hundred forty billion, seven hundred ninety-seven million, nine hundred seventy-nine thousand, four hundred fifty-seven".