155013765644 has 12 divisors (see below), whose sum is σ = 271489566600. Its totient is φ = 77445318048.

The previous prime is 155013765637. The next prime is 155013765649. The reversal of 155013765644 is 446567310551.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (155013765649) 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, 15385529 + ... + 15395600.

It is an arithmetic number, because the mean of its divisors is an integer number (22624130550).

Almost surely, 2^155013765644 is an apocalyptic number.

It is an amenable number.

155013765644 is a deficient number, since it is larger than the sum of its proper divisors (116475800956).

155013765644 is a wasteful number, since it uses less digits than its factorization.

155013765644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30782392 (or 30782390 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 47.

The spelling of 155013765644 in words is "one hundred fifty-five billion, thirteen million, seven hundred sixty-five thousand, six hundred forty-four".