1406141666520 has 128 divisors (see below), whose sum is σ = 4339748275200. Its totient is φ = 364324207104.

The previous prime is 1406141666513. The next prime is 1406141666653. The reversal of 1406141666520 is 256661416041.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 418180 + ... + 1728339.

It is an arithmetic number, because the mean of its divisors is an integer number (33904283400).

Almost surely, 2^{1406141666520} is an apocalyptic number.

1406141666520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1406141666520 is an abundant number, since it is smaller than the sum of its proper divisors (2933606608680).

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

1406141666520 is a wasteful number, since it uses less digits than its factorization.

1406141666520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146689 (or 2146685 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 1406141666520 in words is "one trillion, four hundred six billion, one hundred forty-one million, six hundred sixty-six thousand, five hundred twenty".