72400341540 has 96 divisors (see below), whose sum is σ = 218695800960. Its totient is φ = 17828202496.

The previous prime is 72400341509. The next prime is 72400341569. The reversal of 72400341540 is 4514300427.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 72400341498 and 72400341507.

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, 615570 + ... + 723689.

It is an arithmetic number, because the mean of its divisors is an integer number (2278081260).

Almost surely, 2^72400341540 is an apocalyptic number.

It is an amenable number.

72400341540 is an abundant number, since it is smaller than the sum of its proper divisors (146295459420).

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

72400341540 is a wasteful number, since it uses less digits than its factorization.

72400341540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339341 (or 1339339 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

Adding to 72400341540 its reverse (4514300427), we get a palindrome (76914641967).

The spelling of 72400341540 in words is "seventy-two billion, four hundred million, three hundred forty-one thousand, five hundred forty".