72471624454 has 4 divisors (see below), whose sum is σ = 108707436684. Its totient is φ = 36235812226.

The previous prime is 72471624451. The next prime is 72471624481. The reversal of 72471624454 is 45442617427.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×72471624454² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72471624451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18117906112 + ... + 18117906115.

It is an arithmetic number, because the mean of its divisors is an integer number (27176859171).

Almost surely, 2^72471624454 is an apocalyptic number.

72471624454 is a deficient number, since it is larger than the sum of its proper divisors (36235812230).

72471624454 is a wasteful number, since it uses less digits than its factorization.

72471624454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36235812229.

The product of its digits is 1505280, while the sum is 46.

The spelling of 72471624454 in words is "seventy-two billion, four hundred seventy-one million, six hundred twenty-four thousand, four hundred fifty-four".