72019789446 has 64 divisors (see below), whose sum is σ = 168116025600. Its totient is φ = 20336572800.

The previous prime is 72019789381. The next prime is 72019789463. The reversal of 72019789446 is 64498791027.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 394261 + ... + 547248.

It is an arithmetic number, because the mean of its divisors is an integer number (2626812900).

Almost surely, 2^72019789446 is an apocalyptic number.

72019789446 is an abundant number, since it is smaller than the sum of its proper divisors (96096236154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72019789446 is a wasteful number, since it uses less digits than its factorization.

72019789446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941605.

The product of its (nonzero) digits is 6096384, while the sum is 57.

The spelling of 72019789446 in words is "seventy-two billion, nineteen million, seven hundred eighty-nine thousand, four hundred forty-six".