1421166505344 has 64 divisors (see below), whose sum is σ = 3775097899440. Its totient is φ = 473706561536.

The previous prime is 1421166505307. The next prime is 1421166505351. The reversal of 1421166505344 is 4435056611241.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 1421166505296 and 1421166505305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21852844 + ... + 21917780.

Almost surely, 2^{1421166505344} is an apocalyptic number.

It is an amenable number.

1421166505344 is an abundant number, since it is smaller than the sum of its proper divisors (2353931394096).

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

1421166505344 is an equidigital number, since it uses as much as digits as its factorization.

1421166505344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121947 (or 121935 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 1421166505344 in words is "one trillion, four hundred twenty-one billion, one hundred sixty-six million, five hundred five thousand, three hundred forty-four".