72441435554 has 4 divisors (see below), whose sum is σ = 108662153334. Its totient is φ = 36220717776.

The previous prime is 72441435541. The next prime is 72441435581. The reversal of 72441435554 is 45553414427.

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

It can be written as a sum of positive squares in only one way, i.e., 55260255625 + 17181179929 = 235075^2 + 131077^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18110358887 + ... + 18110358890.

Almost surely, 2^72441435554 is an apocalyptic number.

72441435554 is a deficient number, since it is larger than the sum of its proper divisors (36220717780).

72441435554 is a wasteful number, since it uses less digits than its factorization.

72441435554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36220717779.

The product of its digits is 1344000, while the sum is 44.

The spelling of 72441435554 in words is "seventy-two billion, four hundred forty-one million, four hundred thirty-five thousand, five hundred fifty-four".