1546664642140 has 24 divisors (see below), whose sum is σ = 3248883575280. Its totient is φ = 618496747008.

The previous prime is 1546664642129. The next prime is 1546664642143. The reversal of 1546664642140 is 412464666451.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1546664642143) 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, 10494357 + ... + 10640716.

It is an arithmetic number, because the mean of its divisors is an integer number (135370148970).

Almost surely, 2^{1546664642140} is an apocalyptic number.

1546664642140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1546664642140 is an abundant number, since it is smaller than the sum of its proper divisors (1702218933140).

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

1546664642140 is a wasteful number, since it uses less digits than its factorization.

1546664642140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21138741 (or 21138739 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 49.

The spelling of 1546664642140 in words is "one trillion, five hundred forty-six billion, six hundred sixty-four million, six hundred forty-two thousand, one hundred forty".