1466631643550 has 48 divisors (see below), whose sum is σ = 2869832278800. Its totient is φ = 556822828800.

The previous prime is 1466631643537. The next prime is 1466631643567. The reversal of 1466631643550 is 553461366641.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8486231 + ... + 8657330.

It is an arithmetic number, because the mean of its divisors is an integer number (59788172475).

Almost surely, 2^{1466631643550} is an apocalyptic number.

1466631643550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1466631643550 is a deficient number, since it is larger than the sum of its proper divisors (1403200635250).

1466631643550 is a wasteful number, since it uses less digits than its factorization.

1466631643550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17143661 (or 17143656 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 50.

The spelling of 1466631643550 in words is "one trillion, four hundred sixty-six billion, six hundred thirty-one million, six hundred forty-three thousand, five hundred fifty".