196438877457 has 12 divisors (see below), whose sum is σ = 273801386544. Its totient is φ = 125265370120.

The previous prime is 196438877449. The next prime is 196438877461. The reversal of 196438877457 is 754778834691.

It is not a de Polignac number, because 196438877457 - 2³ = 196438877449 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a junction number, because it is equal to n+sod(n) for n = 196438877391 and 196438877400.

It is not an unprimeable number, because it can be changed into a prime (196438877417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61888419 + ... + 61891592.

It is an arithmetic number, because the mean of its divisors is an integer number (22816782212).

Almost surely, 2^196438877457 is an apocalyptic number.

It is an amenable number.

196438877457 is a deficient number, since it is larger than the sum of its proper divisors (77362509087).

196438877457 is a wasteful number, since it uses less digits than its factorization.

196438877457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123780060 (or 123780037 counting only the distinct ones).

The product of its digits is 284497920, while the sum is 69.

The spelling of 196438877457 in words is "one hundred ninety-six billion, four hundred thirty-eight million, eight hundred seventy-seven thousand, four hundred fifty-seven".