196140072857 has 4 divisors (see below), whose sum is σ = 196188880080. Its totient is φ = 196091265636.

The previous prime is 196140072847. The next prime is 196140072883. The reversal of 196140072857 is 758270041691.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 758270041691 = 1607 ⋅471854413.

It is a cyclic number.

It is not a de Polignac number, because 196140072857 - 2¹⁶ = 196140007321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196140072847) 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, 24397583 + ... + 24405620.

It is an arithmetic number, because the mean of its divisors is an integer number (49047220020).

Almost surely, 2^196140072857 is an apocalyptic number.

It is an amenable number.

196140072857 is a deficient number, since it is larger than the sum of its proper divisors (48807223).

196140072857 is an equidigital number, since it uses as much as digits as its factorization.

196140072857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48807222.

The product of its (nonzero) digits is 846720, while the sum is 50.

The spelling of 196140072857 in words is "one hundred ninety-six billion, one hundred forty million, seventy-two thousand, eight hundred fifty-seven".