1187473136865 has 16 divisors (see below), whose sum is σ = 1900330633728. Its totient is φ = 633194468096.

The previous prime is 1187473136849. The next prime is 1187473136867. The reversal of 1187473136865 is 5686313747811.

It is a cyclic number.

It is not a de Polignac number, because 1187473136865 - 2⁴ = 1187473136849 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1187473136799 and 1187473136808.

It is not an unprimeable number, because it can be changed into a prime (1187473136867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7704792 + ... + 7857401.

It is an arithmetic number, because the mean of its divisors is an integer number (118770664608).

Almost surely, 2^{1187473136865} is an apocalyptic number.

1187473136865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1187473136865 is a deficient number, since it is larger than the sum of its proper divisors (712857496863).

1187473136865 is a wasteful number, since it uses less digits than its factorization.

1187473136865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15567288.

The product of its digits is 20321280, while the sum is 60.

The spelling of 1187473136865 in words is "one trillion, one hundred eighty-seven billion, four hundred seventy-three million, one hundred thirty-six thousand, eight hundred sixty-five".