73517506906 has 8 divisors (see below), whose sum is σ = 111081196980. Its totient is φ = 36490441248.

The previous prime is 73517506903. The next prime is 73517506913. The reversal of 73517506906 is 60960571537.

It can be written as a sum of positive squares in 2 ways, for example, as 73517441881 + 65025 = 271141^2 + 255^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 73517506906.

It is not an unprimeable number, because it can be changed into a prime (73517506903) 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, 134155761 + ... + 134156308.

Almost surely, 2^73517506906 is an apocalyptic number.

73517506906 is a deficient number, since it is larger than the sum of its proper divisors (37563690074).

73517506906 is a wasteful number, since it uses less digits than its factorization.

73517506906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268312208.

The product of its (nonzero) digits is 1190700, while the sum is 49.

The spelling of 73517506906 in words is "seventy-three billion, five hundred seventeen million, five hundred six thousand, nine hundred six".