4631221136272 has 10 divisors (see below), whose sum is σ = 8972990951558. Its totient is φ = 2315610568128.

The previous prime is 4631221136263. The next prime is 4631221136279. The reversal of 4631221136272 is 2726311221364.

It can be written as a sum of positive squares in only one way, i.e., 3511890992016 + 1119330144256 = 1874004^2 + 1057984^2 .

It is not an unprimeable number, because it can be changed into a prime (4631221136279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144725660493 + ... + 144725660524.

Almost surely, 2^{4631221136272} is an apocalyptic number.

It is an amenable number.

4631221136272 is a deficient number, since it is larger than the sum of its proper divisors (4341769815286).

4631221136272 is a wasteful number, since it uses less digits than its factorization.

4631221136272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289451321025 (or 289451321019 counting only the distinct ones).

The product of its digits is 145152, while the sum is 40.

The spelling of 4631221136272 in words is "four trillion, six hundred thirty-one billion, two hundred twenty-one million, one hundred thirty-six thousand, two hundred seventy-two".