1656450512412 has 48 divisors (see below), whose sum is σ = 4093637409792. Its totient is φ = 519514525440.

The previous prime is 1656450512359. The next prime is 1656450512419. The reversal of 1656450512412 is 2142150546561.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1656450512419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 539308 + ... + 1898355.

It is an arithmetic number, because the mean of its divisors is an integer number (85284112704).

Almost surely, 2^{1656450512412} is an apocalyptic number.

1656450512412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1656450512412 is an abundant number, since it is smaller than the sum of its proper divisors (2437186897380).

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

1656450512412 is a wasteful number, since it uses less digits than its factorization.

1656450512412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2441018 (or 2441016 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 42.

The spelling of 1656450512412 in words is "one trillion, six hundred fifty-six billion, four hundred fifty million, five hundred twelve thousand, four hundred twelve".