63816633402 has 16 divisors (see below), whose sum is σ = 128371033440. Its totient is φ = 21149250032.

The previous prime is 63816633341. The next prime is 63816633403. The reversal of 63816633402 is 20433661836.

It is not an unprimeable number, because it can be changed into a prime (63816633403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30739152 + ... + 30741227.

It is an arithmetic number, because the mean of its divisors is an integer number (8023189590).

Almost surely, 2^63816633402 is an apocalyptic number.

63816633402 is an abundant number, since it is smaller than the sum of its proper divisors (64554400038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63816633402 is a wasteful number, since it uses less digits than its factorization.

63816633402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61480557.

The product of its (nonzero) digits is 373248, while the sum is 42.

The spelling of 63816633402 in words is "sixty-three billion, eight hundred sixteen million, six hundred thirty-three thousand, four hundred two".