72402423247770 has 256 divisors, whose sum is σ = 217228196044800. Its totient is φ = 15004050969600.

The previous prime is 72402423247757. The next prime is 72402423247853. The reversal of 72402423247770 is 7774232420427.

72402423247770 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×72402423247770² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3523393456 + ... + 3523414004.

It is an arithmetic number, because the mean of its divisors is an integer number (848547640800).

Almost surely, 2^{72402423247770} is an apocalyptic number.

72402423247770 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 72402423247770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108614098022400).

72402423247770 is an abundant number, since it is smaller than the sum of its proper divisors (144825772797030).

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

72402423247770 is a wasteful number, since it uses less digits than its factorization.

72402423247770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24621.

The product of its (nonzero) digits is 7375872, while the sum is 51.

The spelling of 72402423247770 in words is "seventy-two trillion, four hundred two billion, four hundred twenty-three million, two hundred forty-seven thousand, seven hundred seventy".