1660645214454 has 16 divisors (see below), whose sum is σ = 3321640926720. Its totient is φ = 553489988520.

The previous prime is 1660645214453. The next prime is 1660645214491. The reversal of 1660645214454 is 4544125460661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660645214453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14542462 + ... + 14656209.

It is an arithmetic number, because the mean of its divisors is an integer number (207602557920).

Almost surely, 2^{1660645214454} is an apocalyptic number.

1660645214454 is an abundant number, since it is smaller than the sum of its proper divisors (1660995712266).

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

1660645214454 is a wasteful number, since it uses less digits than its factorization.

1660645214454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29208155.

The product of its (nonzero) digits is 2764800, while the sum is 48.

The spelling of 1660645214454 in words is "one trillion, six hundred sixty billion, six hundred forty-five million, two hundred fourteen thousand, four hundred fifty-four".