72666051452 has 12 divisors (see below), whose sum is σ = 127579812360. Its totient is φ = 36214676496.

The previous prime is 72666051449. The next prime is 72666051463. The reversal of 72666051452 is 25415066627.

It is a super-2 number, since 2×72666051452² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29585927 + ... + 29588382.

It is an arithmetic number, because the mean of its divisors is an integer number (10631651030).

Almost surely, 2^72666051452 is an apocalyptic number.

It is an amenable number.

72666051452 is a deficient number, since it is larger than the sum of its proper divisors (54913760908).

72666051452 is a wasteful number, since it uses less digits than its factorization.

72666051452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59174620 (or 59174618 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 72666051452 in words is "seventy-two billion, six hundred sixty-six million, fifty-one thousand, four hundred fifty-two".