73403144155 has 48 divisors (see below), whose sum is σ = 98016871680. Its totient is φ = 52726639680.

The previous prime is 73403144147. The next prime is 73403144167. The reversal of 73403144155 is 55144130437.

It is a happy number.

It is not a de Polignac number, because 73403144155 - 2³ = 73403144147 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27604216 + ... + 27606874.

It is an arithmetic number, because the mean of its divisors is an integer number (2042018160).

Almost surely, 2^73403144155 is an apocalyptic number.

73403144155 is a deficient number, since it is larger than the sum of its proper divisors (24613727525).

73403144155 is a wasteful number, since it uses less digits than its factorization.

73403144155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3232 (or 3221 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 73403144155 in words is "seventy-three billion, four hundred three million, one hundred forty-four thousand, one hundred fifty-five".