72783012215 has 8 divisors (see below), whose sum is σ = 87360946800. Its totient is φ = 58212188352.

The previous prime is 72783012199. The next prime is 72783012217. The reversal of 72783012215 is 51221038727.

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

It is a cyclic number.

It is not a de Polignac number, because 72783012215 - 2⁴ = 72783012199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72783012217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1755134 + ... + 1796123.

It is an arithmetic number, because the mean of its divisors is an integer number (10920118350).

Almost surely, 2^72783012215 is an apocalyptic number.

72783012215 is a deficient number, since it is larger than the sum of its proper divisors (14577934585).

72783012215 is a wasteful number, since it uses less digits than its factorization.

72783012215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3555361.

The product of its (nonzero) digits is 47040, while the sum is 38.

The spelling of 72783012215 in words is "seventy-two billion, seven hundred eighty-three million, twelve thousand, two hundred fifteen".