72113473507 has 4 divisors (see below), whose sum is σ = 72165997440. Its totient is φ = 72060949576.

The previous prime is 72113473447. The next prime is 72113473547. The reversal of 72113473507 is 70537431127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70537431127 = 487 ⋅144840721.

It is a cyclic number.

It is not a de Polignac number, because 72113473507 - 2⁷ = 72113473379 is a prime.

It is a super-2 number, since 2×72113473507² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72113473507.

It is not an unprimeable number, because it can be changed into a prime (72113473547) 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 3 ways as a sum of consecutive naturals, for example, 26259907 + ... + 26262652.

It is an arithmetic number, because the mean of its divisors is an integer number (18041499360).

Almost surely, 2^72113473507 is an apocalyptic number.

72113473507 is a deficient number, since it is larger than the sum of its proper divisors (52523933).

72113473507 is a wasteful number, since it uses less digits than its factorization.

72113473507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52523932.

The product of its (nonzero) digits is 123480, while the sum is 40.

The spelling of 72113473507 in words is "seventy-two billion, one hundred thirteen million, four hundred seventy-three thousand, five hundred seven".