1197686500051 has 2 divisors, whose sum is σ = 1197686500052. Its totient is φ = 1197686500050.

The previous prime is 1197686500027. The next prime is 1197686500117. The reversal of 1197686500051 is 1500056867911.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1197686500051 - 2¹⁷ = 1197686368979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1197686499968 and 1197686500004.

It is not a weakly prime, because it can be changed into another prime (1197686509051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598843250025 + 598843250026.

It is an arithmetic number, because the mean of its divisors is an integer number (598843250026).

Almost surely, 2^{1197686500051} is an apocalyptic number.

1197686500051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1197686500051 is an equidigital number, since it uses as much as digits as its factorization.

1197686500051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 49.

The spelling of 1197686500051 in words is "one trillion, one hundred ninety-seven billion, six hundred eighty-six million, five hundred thousand, fifty-one".