135386973963 has 48 divisors (see below), whose sum is σ = 205412503296. Its totient is φ = 89097913440.

The previous prime is 135386973959. The next prime is 135386974013. The reversal of 135386973963 is 369379683531.

It is a happy number.

135386973963 is a `hidden beast` number, since 1 + 3 + 538 + 6 + 9 + 7 + 3 + 96 + 3 = 666.

It is not a de Polignac number, because 135386973963 - 2² = 135386973959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135386973963.

It is not an unprimeable number, because it can be changed into a prime (135386973263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37532706 + ... + 37536312.

It is an arithmetic number, because the mean of its divisors is an integer number (4279427152).

Almost surely, 2^135386973963 is an apocalyptic number.

135386973963 is a deficient number, since it is larger than the sum of its proper divisors (70025529333).

135386973963 is an equidigital number, since it uses as much as digits as its factorization.

135386973963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5566 (or 5554 counting only the distinct ones).

The product of its digits is 66134880, while the sum is 63.

The spelling of 135386973963 in words is "one hundred thirty-five billion, three hundred eighty-six million, nine hundred seventy-three thousand, nine hundred sixty-three".