73154045137 has 4 divisors (see below), whose sum is σ = 73403717940. Its totient is φ = 72904372336.

The previous prime is 73154045113. The next prime is 73154045171.

73154045137 is nontrivially palindromic in base 10.

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 51343481281 + 21810563856 = 226591^2 + 147684^2 .

It is a cyclic number.

It is not a de Polignac number, because 73154045137 - 2⁷ = 73154045009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73154045137.

It is not an unprimeable number, because it can be changed into a prime (73154045197) 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, 124835962 + ... + 124836547.

It is an arithmetic number, because the mean of its divisors is an integer number (18350929485).

Almost surely, 2^73154045137 is an apocalyptic number.

It is an amenable number.

73154045137 is a deficient number, since it is larger than the sum of its proper divisors (249672803).

73154045137 is a wasteful number, since it uses less digits than its factorization.

73154045137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249672802.

The product of its (nonzero) digits is 176400, while the sum is 40.

It can be divided in two parts, 731540 and 45137, that added together give a palindrome (776677).

The spelling of 73154045137 in words is "seventy-three billion, one hundred fifty-four million, forty-five thousand, one hundred thirty-seven".