63630641474 has 4 divisors (see below), whose sum is σ = 95445962214. Its totient is φ = 31815320736.

The previous prime is 63630641449. The next prime is 63630641483. The reversal of 63630641474 is 47414603636.

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., 63289980625 + 340660849 = 251575^2 + 18457^2 .

It is a super-3 number, since 3×63630641474³ (a number of 33 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15907660367 + ... + 15907660370.

Almost surely, 2^63630641474 is an apocalyptic number.

63630641474 is a deficient number, since it is larger than the sum of its proper divisors (31815320740).

63630641474 is a wasteful number, since it uses less digits than its factorization.

63630641474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31815320739.

The product of its (nonzero) digits is 870912, while the sum is 44.

The spelling of 63630641474 in words is "sixty-three billion, six hundred thirty million, six hundred forty-one thousand, four hundred seventy-four".