72306245771 has 8 divisors (see below), whose sum is σ = 74643545088. Its totient is φ = 69969249000.

The previous prime is 72306245761. The next prime is 72306245797. The reversal of 72306245771 is 17754260327.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72306245771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72306245761) 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, 473456 + ... + 607266.

It is an arithmetic number, because the mean of its divisors is an integer number (9330443136).

Almost surely, 2^72306245771 is an apocalyptic number.

72306245771 is a deficient number, since it is larger than the sum of its proper divisors (2337299317).

72306245771 is a wasteful number, since it uses less digits than its factorization.

72306245771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151273.

The product of its (nonzero) digits is 493920, while the sum is 44.

The spelling of 72306245771 in words is "seventy-two billion, three hundred six million, two hundred forty-five thousand, seven hundred seventy-one".