36129748391 has 4 divisors (see below), whose sum is σ = 39414270984. Its totient is φ = 32845225800.

The previous prime is 36129748363. The next prime is 36129748399. The reversal of 36129748391 is 19384792163.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 36129748391 - 2⁶ = 36129748327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36129748399) 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, 1642261280 + ... + 1642261301.

It is an arithmetic number, because the mean of its divisors is an integer number (9853567746).

Almost surely, 2^36129748391 is an apocalyptic number.

36129748391 is a deficient number, since it is larger than the sum of its proper divisors (3284522593).

36129748391 is a wasteful number, since it uses less digits than its factorization.

36129748391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3284522592.

The product of its digits is 1959552, while the sum is 53.

The spelling of 36129748391 in words is "thirty-six billion, one hundred twenty-nine million, seven hundred forty-eight thousand, three hundred ninety-one".