72773317383 has 32 divisors (see below), whose sum is σ = 106277906112. Its totient is φ = 44020454400.

The previous prime is 72773317321. The next prime is 72773317423. The reversal of 72773317383 is 38371337727.

It is a happy number.

It is not a de Polignac number, because 72773317383 - 2¹² = 72773313287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72773312383) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3932773 + ... + 3951233.

It is an arithmetic number, because the mean of its divisors is an integer number (3321184566).

Almost surely, 2^72773317383 is an apocalyptic number.

72773317383 is a deficient number, since it is larger than the sum of its proper divisors (33504588729).

72773317383 is a wasteful number, since it uses less digits than its factorization.

72773317383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20195.

The product of its digits is 3111696, while the sum is 51.

The spelling of 72773317383 in words is "seventy-two billion, seven hundred seventy-three million, three hundred seventeen thousand, three hundred eighty-three".