63660144642 has 16 divisors (see below), whose sum is σ = 127876275840. Its totient is φ = 21127383792.

The previous prime is 63660144623. The next prime is 63660144649. The reversal of 63660144642 is 24644106636.

It is a super-2 number, since 2×63660144642² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63660144594 and 63660144603.

It is not an unprimeable number, because it can be changed into a prime (63660144649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23164618 + ... + 23167365.

It is an arithmetic number, because the mean of its divisors is an integer number (7992267240).

Almost surely, 2^63660144642 is an apocalyptic number.

63660144642 is an abundant number, since it is smaller than the sum of its proper divisors (64216131198).

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

63660144642 is a wasteful number, since it uses less digits than its factorization.

63660144642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46332217.

The product of its (nonzero) digits is 497664, while the sum is 42.

The spelling of 63660144642 in words is "sixty-three billion, six hundred sixty million, one hundred forty-four thousand, six hundred forty-two".