1499917181966 has 24 divisors (see below), whose sum is σ = 2621247675696. Its totient is φ = 641828080320.

The previous prime is 1499917181771. The next prime is 1499917181977. The reversal of 1499917181966 is 6691817199941.

It is a self number, because there is not a number n which added to its sum of digits gives 1499917181966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11764475 + ... + 11891286.

It is an arithmetic number, because the mean of its divisors is an integer number (109218653154).

Almost surely, 2^{1499917181966} is an apocalyptic number.

1499917181966 is a deficient number, since it is larger than the sum of its proper divisors (1121330493730).

1499917181966 is a wasteful number, since it uses less digits than its factorization.

1499917181966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23656424 (or 23656417 counting only the distinct ones).

The product of its digits is 52907904, while the sum is 71.

The spelling of 1499917181966 in words is "one trillion, four hundred ninety-nine billion, nine hundred seventeen million, one hundred eighty-one thousand, nine hundred sixty-six".