72831787547 has 8 divisors (see below), whose sum is σ = 74396536896. Its totient is φ = 71267668992.

The previous prime is 72831787529. The next prime is 72831787673. The reversal of 72831787547 is 74578713827.

It is a happy number.

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 72831787547 - 2²² = 72827593243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72831780547) 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, 79493 + ... + 389849.

It is an arithmetic number, because the mean of its divisors is an integer number (9299567112).

Almost surely, 2^72831787547 is an apocalyptic number.

72831787547 is a deficient number, since it is larger than the sum of its proper divisors (1564749349).

72831787547 is a wasteful number, since it uses less digits than its factorization.

72831787547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315397.

The product of its digits is 18439680, while the sum is 59.

The spelling of 72831787547 in words is "seventy-two billion, eight hundred thirty-one million, seven hundred eighty-seven thousand, five hundred forty-seven".