72110421432 has 96 divisors (see below), whose sum is σ = 236328300000. Its totient is φ = 19391035392.

The previous prime is 72110421431. The next prime is 72110421451. The reversal of 72110421432 is 23412401127.

It is a junction number, because it is equal to n+sod(n) for n = 72110421396 and 72110421405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72110421431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4199557 + ... + 4216692.

It is an arithmetic number, because the mean of its divisors is an integer number (2461753125).

Almost surely, 2^72110421432 is an apocalyptic number.

72110421432 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

72110421432 is an abundant number, since it is smaller than the sum of its proper divisors (164217878568).

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

72110421432 is a wasteful number, since it uses less digits than its factorization.

72110421432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8416285 (or 8416278 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

Adding to 72110421432 its reverse (23412401127), we get a palindrome (95522822559).

The spelling of 72110421432 in words is "seventy-two billion, one hundred ten million, four hundred twenty-one thousand, four hundred thirty-two".