63197744978 has 8 divisors (see below), whose sum is σ = 94856963760. Its totient is φ = 31578757060.

The previous prime is 63197744903. The next prime is 63197744993. The reversal of 63197744978 is 87944779136.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10053788 + ... + 10060071.

It is an arithmetic number, because the mean of its divisors is an integer number (11857120470).

Almost surely, 2^63197744978 is an apocalyptic number.

63197744978 is a deficient number, since it is larger than the sum of its proper divisors (31659218782).

63197744978 is a wasteful number, since it uses less digits than its factorization.

63197744978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20115432.

The product of its digits is 64012032, while the sum is 65.

The spelling of 63197744978 in words is "sixty-three billion, one hundred ninety-seven million, seven hundred forty-four thousand, nine hundred seventy-eight".