72528484346 has 4 divisors (see below), whose sum is σ = 108792726522. Its totient is φ = 36264242172.

The previous prime is 72528484321. The next prime is 72528484373. The reversal of 72528484346 is 64348482527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64348482527 = 7 ⋅9192640361.

It can be written as a sum of positive squares in only one way, i.e., 63132090121 + 9396394225 = 251261^2 + 96935^2 .

It is an unprimeable number.

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, 18132121085 + ... + 18132121088.

Almost surely, 2^72528484346 is an apocalyptic number.

72528484346 is a deficient number, since it is larger than the sum of its proper divisors (36264242176).

72528484346 is a wasteful number, since it uses less digits than its factorization.

72528484346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36264242175.

The product of its digits is 10321920, while the sum is 53.

The spelling of 72528484346 in words is "seventy-two billion, five hundred twenty-eight million, four hundred eighty-four thousand, three hundred forty-six".