72556551370 has 8 divisors (see below), whose sum is σ = 130601792484. Its totient is φ = 29022620544.

The previous prime is 72556551367. The next prime is 72556551373. The reversal of 72556551370 is 7315565527.

It is an interprime number because it is at equal distance from previous prime (72556551367) and next prime (72556551373).

It can be written as a sum of positive squares in 2 ways, for example, as 70759724049 + 1796827321 = 266007^2 + 42389^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 72556551370.

It is not an unprimeable number, because it can be changed into a prime (72556551373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3627827559 + ... + 3627827578.

Almost surely, 2^72556551370 is an apocalyptic number.

72556551370 is a deficient number, since it is larger than the sum of its proper divisors (58045241114).

72556551370 is a wasteful number, since it uses less digits than its factorization.

72556551370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7255655144.

The product of its (nonzero) digits is 1102500, while the sum is 46.

The spelling of 72556551370 in words is "seventy-two billion, five hundred fifty-six million, five hundred fifty-one thousand, three hundred seventy".