72750662212505 has 8 divisors (see below), whose sum is σ = 87314060276424. Its totient is φ = 58191686022400.

The previous prime is 72750662212499. The next prime is 72750662212577. The reversal of 72750662212505 is 50521226605727.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18482054453776 + 54268607758729 = 4299076^2 + 7366723^2 .

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

It is not a de Polignac number, because 72750662212505 - 2²⁴ = 72750645435289 is a prime.

It is a super-3 number, since 3×72750662212505³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1105432256 + ... + 1105498065.

It is an arithmetic number, because the mean of its divisors is an integer number (10914257534553).

Almost surely, 2^{72750662212505} is an apocalyptic number.

It is an amenable number.

72750662212505 is a deficient number, since it is larger than the sum of its proper divisors (14563398063919).

72750662212505 is a wasteful number, since it uses less digits than its factorization.

72750662212505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2210936907.

The product of its (nonzero) digits is 3528000, while the sum is 50.

The spelling of 72750662212505 in words is "seventy-two trillion, seven hundred fifty billion, six hundred sixty-two million, two hundred twelve thousand, five hundred five".