631453531466 has 4 divisors (see below), whose sum is σ = 947180297202. Its totient is φ = 315726765732.

The previous prime is 631453531451. The next prime is 631453531523. The reversal of 631453531466 is 664135354136.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 629729538025 + 1723993441 = 793555^2 + 41521^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 631453531466.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157863382865 + ... + 157863382868.

Almost surely, 2^631453531466 is an apocalyptic number.

631453531466 is a deficient number, since it is larger than the sum of its proper divisors (315726765736).

631453531466 is a wasteful number, since it uses less digits than its factorization.

631453531466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315726765735.

The product of its digits is 2332800, while the sum is 47.

The spelling of 631453531466 in words is "six hundred thirty-one billion, four hundred fifty-three million, five hundred thirty-one thousand, four hundred sixty-six".