69736742091 has 12 divisors (see below), whose sum is σ = 100738150968. Its totient is φ = 46487791584.

The previous prime is 69736742077. The next prime is 69736742149. The reversal of 69736742091 is 19024763796.

It is a happy number.

69736742091 is a `hidden beast` number, since 6 + 9 + 73 + 67 + 420 + 91 = 666.

It is not a de Polignac number, because 69736742091 - 2⁵ = 69736742059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (69736742021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146365 + ... + 401118.

It is an arithmetic number, because the mean of its divisors is an integer number (8394845914).

Almost surely, 2^69736742091 is an apocalyptic number.

69736742091 is a deficient number, since it is larger than the sum of its proper divisors (31001408877).

69736742091 is a wasteful number, since it uses less digits than its factorization.

69736742091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561642 (or 561639 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 54.

The spelling of 69736742091 in words is "sixty-nine billion, seven hundred thirty-six million, seven hundred forty-two thousand, ninety-one".