72703197770 has 48 divisors (see below), whose sum is σ = 152258071680. Its totient is φ = 24922475424.

The previous prime is 72703197673. The next prime is 72703197773. The reversal of 72703197770 is 7779130727.

It is not an unprimeable number, because it can be changed into a prime (72703197773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4228451 + ... + 4245609.

It is an arithmetic number, because the mean of its divisors is an integer number (3172043160).

Almost surely, 2^72703197770 is an apocalyptic number.

72703197770 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72703197770 is an abundant number, since it is smaller than the sum of its proper divisors (79554873910).

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

72703197770 is a wasteful number, since it uses less digits than its factorization.

72703197770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25827 (or 25820 counting only the distinct ones).

The product of its (nonzero) digits is 907578, while the sum is 50.

The spelling of 72703197770 in words is "seventy-two billion, seven hundred three million, one hundred ninety-seven thousand, seven hundred seventy".