671153747272 has 16 divisors (see below), whose sum is σ = 1289106283500. Its totient is φ = 327392071680.

The previous prime is 671153747269. The next prime is 671153747291. The reversal of 671153747272 is 272747351176.

It can be written as a sum of positive squares in 2 ways, for example, as 657062632836 + 14091114436 = 810594^2 + 118706^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1023099897 + ... + 1023100552.

Almost surely, 2^671153747272 is an apocalyptic number.

It is an amenable number.

671153747272 is a deficient number, since it is larger than the sum of its proper divisors (617952536228).

671153747272 is a wasteful number, since it uses less digits than its factorization.

671153747272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046200496 (or 2046200492 counting only the distinct ones).

The product of its digits is 3457440, while the sum is 52.

The spelling of 671153747272 in words is "six hundred seventy-one billion, one hundred fifty-three million, seven hundred forty-seven thousand, two hundred seventy-two".