72021727497 has 8 divisors (see below), whose sum is σ = 96032055520. Its totient is φ = 48012942240.

The previous prime is 72021727489. The next prime is 72021727501. The reversal of 72021727497 is 79472712027.

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

It is not a de Polignac number, because 72021727497 - 2³ = 72021727489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72021727457) 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, 271972 + ... + 466917.

It is an arithmetic number, because the mean of its divisors is an integer number (12004006940).

Almost surely, 2^72021727497 is an apocalyptic number.

It is an amenable number.

72021727497 is a deficient number, since it is larger than the sum of its proper divisors (24010328023).

72021727497 is a wasteful number, since it uses less digits than its factorization.

72021727497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771383.

The product of its (nonzero) digits is 691488, while the sum is 48.

The spelling of 72021727497 in words is "seventy-two billion, twenty-one million, seven hundred twenty-seven thousand, four hundred ninety-seven".