155729366667 has 64 divisors (see below), whose sum is σ = 284008120320. Its totient is φ = 82373306400.

The previous prime is 155729366647. The next prime is 155729366671. The reversal of 155729366667 is 766663927551.

It is not a de Polignac number, because 155729366667 - 2⁸ = 155729366411 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (155729366627) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 443059 + ... + 712572.

It is an arithmetic number, because the mean of its divisors is an integer number (4437626880).

Almost surely, 2^155729366667 is an apocalyptic number.

155729366667 is a deficient number, since it is larger than the sum of its proper divisors (128278753653).

155729366667 is a wasteful number, since it uses less digits than its factorization.

155729366667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155701 (or 1155695 counting only the distinct ones).

The product of its digits is 85730400, while the sum is 63.

The spelling of 155729366667 in words is "one hundred fifty-five billion, seven hundred twenty-nine million, three hundred sixty-six thousand, six hundred sixty-seven".