155799380769 has 8 divisors (see below), whose sum is σ = 219952067040. Its totient is φ = 97756474176.

The previous prime is 155799380747. The next prime is 155799380843. The reversal of 155799380769 is 967083997551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155799380769 - 2¹⁹ = 155798856481 is a prime.

It is a super-2 number, since 2×155799380769² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155799380669) 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 7 ways as a sum of consecutive naturals, for example, 1527444859 + ... + 1527444960.

It is an arithmetic number, because the mean of its divisors is an integer number (27494008380).

Almost surely, 2^155799380769 is an apocalyptic number.

It is an amenable number.

155799380769 is a deficient number, since it is larger than the sum of its proper divisors (64152686271).

155799380769 is a wasteful number, since it uses less digits than its factorization.

155799380769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3054889839.

The product of its (nonzero) digits is 128595600, while the sum is 69.

The spelling of 155799380769 in words is "one hundred fifty-five billion, seven hundred ninety-nine million, three hundred eighty thousand, seven hundred sixty-nine".