72779556229 has 8 divisors (see below), whose sum is σ = 73181428992. Its totient is φ = 72378358080.

The previous prime is 72779556193. The next prime is 72779556263. The reversal of 72779556229 is 92265597727.

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 72779556229 - 2¹¹ = 72779554181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72779556299) 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, 48477 + ... + 384589.

It is an arithmetic number, because the mean of its divisors is an integer number (9147678624).

Almost surely, 2^72779556229 is an apocalyptic number.

It is an amenable number.

72779556229 is a deficient number, since it is larger than the sum of its proper divisors (401872763).

72779556229 is a wasteful number, since it uses less digits than its factorization.

72779556229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337307.

The product of its digits is 33339600, while the sum is 61.

The spelling of 72779556229 in words is "seventy-two billion, seven hundred seventy-nine million, five hundred fifty-six thousand, two hundred twenty-nine".