1656021164460 has 96 divisors (see below), whose sum is σ = 5012528209920. Its totient is φ = 406085981952.

The previous prime is 1656021164443. The next prime is 1656021164471. The reversal of 1656021164460 is 644611206561.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3831180 + ... + 4241459.

It is an arithmetic number, because the mean of its divisors is an integer number (52213835520).

Almost surely, 2^{1656021164460} is an apocalyptic number.

1656021164460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1656021164460 is an abundant number, since it is smaller than the sum of its proper divisors (3356507045460).

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

1656021164460 is a wasteful number, since it uses less digits than its factorization.

1656021164460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8072927 (or 8072925 counting only the distinct ones).

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

The spelling of 1656021164460 in words is "one trillion, six hundred fifty-six billion, twenty-one million, one hundred sixty-four thousand, four hundred sixty".