72045456819 has 8 divisors (see below), whose sum is σ = 109783553280. Its totient is φ = 41168832456.

The previous prime is 72045456797. The next prime is 72045456823. The reversal of 72045456819 is 91865454027.

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

It is not a de Polignac number, because 72045456819 - 2¹⁶ = 72045391283 is a prime.

It is a super-2 number, since 2×72045456819² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72045456319) 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, 1715367999 + ... + 1715368040.

It is an arithmetic number, because the mean of its divisors is an integer number (13722944160).

Almost surely, 2^72045456819 is an apocalyptic number.

72045456819 is a deficient number, since it is larger than the sum of its proper divisors (37738096461).

72045456819 is a wasteful number, since it uses less digits than its factorization.

72045456819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3430736049.

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 72045456819 in words is "seventy-two billion, forty-five million, four hundred fifty-six thousand, eight hundred nineteen".