72167628290 has 16 divisors (see below), whose sum is σ = 129936046968. Its totient is φ = 28859425536.

The previous prime is 72167628277. The next prime is 72167628293. The reversal of 72167628290 is 9282676127.

It can be written as a sum of positive squares in 4 ways, for example, as 42774926041 + 29392702249 = 206821^2 + 171443^2 .

It is not an unprimeable number, because it can be changed into a prime (72167628293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 913397 + ... + 989256.

Almost surely, 2^72167628290 is an apocalyptic number.

72167628290 is a deficient number, since it is larger than the sum of its proper divisors (57768418678).

72167628290 is a wasteful number, since it uses less digits than its factorization.

72167628290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906453.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The spelling of 72167628290 in words is "seventy-two billion, one hundred sixty-seven million, six hundred twenty-eight thousand, two hundred ninety".