663151246240 has 384 divisors, whose sum is σ = 1925055175680. Its totient is φ = 210943180800.

The previous prime is 663151246193. The next prime is 663151246279. The reversal of 663151246240 is 42642151366.

It is a super-2 number, since 2×663151246240² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 663151246193 and 663151246202.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 191163226 + ... + 191166694.

It is an arithmetic number, because the mean of its divisors is an integer number (5013164520).

Almost surely, 2^663151246240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663151246240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (962527587840).

663151246240 is an abundant number, since it is smaller than the sum of its proper divisors (1261903929440).

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

663151246240 is a wasteful number, since it uses less digits than its factorization.

663151246240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3736 (or 3728 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 663151246240 in words is "six hundred sixty-three billion, one hundred fifty-one million, two hundred forty-six thousand, two hundred forty".