72675435406537 has 4 divisors (see below), whose sum is σ = 72680896043140. Its totient is φ = 72669974769936.

The previous prime is 72675435406423. The next prime is 72675435406577. The reversal of 72675435406537 is 73560453457627.

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 22474653673536 + 50200781733001 = 4740744^2 + 7085251^2 .

It is a cyclic number.

It is not a de Polignac number, because 72675435406537 - 2¹⁹ = 72675434882249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72675435406577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2730298338 + ... + 2730324955.

It is an arithmetic number, because the mean of its divisors is an integer number (18170224010785).

Almost surely, 2^{72675435406537} is an apocalyptic number.

It is an amenable number.

72675435406537 is a deficient number, since it is larger than the sum of its proper divisors (5460636603).

72675435406537 is a wasteful number, since it uses less digits than its factorization.

72675435406537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5460636602.

The product of its (nonzero) digits is 444528000, while the sum is 64.

The spelling of 72675435406537 in words is "seventy-two trillion, six hundred seventy-five billion, four hundred thirty-five million, four hundred six thousand, five hundred thirty-seven".