1661462455750 has 32 divisors (see below), whose sum is σ = 3111184687104. Its totient is φ = 664386912000.

The previous prime is 1661462455721. The next prime is 1661462455769. The reversal of 1661462455750 is 575542641661.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 148422 + ... + 1828921.

It is an arithmetic number, because the mean of its divisors is an integer number (97224521472).

Almost surely, 2^{1661462455750} is an apocalyptic number.

1661462455750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1661462455750 is a deficient number, since it is larger than the sum of its proper divisors (1449722231354).

1661462455750 is a wasteful number, since it uses less digits than its factorization.

1661462455750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980721 (or 1980711 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 52.

The spelling of 1661462455750 in words is "one trillion, six hundred sixty-one billion, four hundred sixty-two million, four hundred fifty-five thousand, seven hundred fifty".