63442155642 has 8 divisors (see below), whose sum is σ = 126884311296. Its totient is φ = 21147385212.

The previous prime is 63442155617. The next prime is 63442155659. The reversal of 63442155642 is 24655124436.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

63442155642 is an admirable number.

It is a super-2 number, since 2×63442155642² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63442155594 and 63442155603.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5286846298 + ... + 5286846309.

It is an arithmetic number, because the mean of its divisors is an integer number (15860538912).

Almost surely, 2^63442155642 is an apocalyptic number.

63442155642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

63442155642 is a wasteful number, since it uses less digits than its factorization.

63442155642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10573692612.

The product of its digits is 691200, while the sum is 42.

The spelling of 63442155642 in words is "sixty-three billion, four hundred forty-two million, one hundred fifty-five thousand, six hundred forty-two".