73571857445 has 4 divisors (see below), whose sum is σ = 88286228940. Its totient is φ = 58857485952.

The previous prime is 73571857439. The next prime is 73571857493. The reversal of 73571857445 is 54475817537.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22390034689 + 51181822756 = 149633^2 + 226234^2 .

It is a cyclic number.

It is not a de Polignac number, because 73571857445 - 2¹⁴ = 73571841061 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7357185740 + ... + 7357185749.

It is an arithmetic number, because the mean of its divisors is an integer number (22071557235).

Almost surely, 2^73571857445 is an apocalyptic number.

It is an amenable number.

73571857445 is a deficient number, since it is larger than the sum of its proper divisors (14714371495).

73571857445 is a wasteful number, since it uses less digits than its factorization.

73571857445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14714371494.

The product of its digits is 16464000, while the sum is 56.

The spelling of 73571857445 in words is "seventy-three billion, five hundred seventy-one million, eight hundred fifty-seven thousand, four hundred forty-five".