72644043210454 has 4 divisors (see below), whose sum is σ = 108966064815684. Its totient is φ = 36322021605226.

The previous prime is 72644043210439. The next prime is 72644043210461. The reversal of 72644043210454 is 45401234044627.

It is a happy number.

72644043210454 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×72644043210454² (a number of 29 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 as a sum of consecutive naturals, namely, 18161010802612 + ... + 18161010802615.

It is an arithmetic number, because the mean of its divisors is an integer number (27241516203921).

Almost surely, 2^{72644043210454} is an apocalyptic number.

72644043210454 is a deficient number, since it is larger than the sum of its proper divisors (36322021605230).

72644043210454 is a wasteful number, since it uses less digits than its factorization.

72644043210454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36322021605229.

The product of its (nonzero) digits is 2580480, while the sum is 46.

The spelling of 72644043210454 in words is "seventy-two trillion, six hundred forty-four billion, forty-three million, two hundred ten thousand, four hundred fifty-four".