72043683810 has 32 divisors (see below), whose sum is σ = 197605533312. Its totient is φ = 16467127680.

The previous prime is 72043683781. The next prime is 72043683841. The reversal of 72043683810 is 1838634027.

It is a super-2 number, since 2×72043683810² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171532371 + ... + 171532790.

It is an arithmetic number, because the mean of its divisors is an integer number (6175172916).

Almost surely, 2^72043683810 is an apocalyptic number.

72043683810 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72043683810 is an abundant number, since it is smaller than the sum of its proper divisors (125561849502).

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

72043683810 is a wasteful number, since it uses less digits than its factorization.

72043683810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343065178.

The product of its (nonzero) digits is 193536, while the sum is 42.

The spelling of 72043683810 in words is "seventy-two billion, forty-three million, six hundred eighty-three thousand, eight hundred ten".