1611456506644 has 24 divisors (see below), whose sum is σ = 2934390509568. Its totient is φ = 773706130080.

The previous prime is 1611456506633. The next prime is 1611456506657. The reversal of 1611456506644 is 4466056541161.

It is a super-2 number, since 2×1611456506644² (a number of 25 digits) contains 22 as substring.

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, 80853972 + ... + 80873899.

It is an arithmetic number, because the mean of its divisors is an integer number (122266271232).

Almost surely, 2^{1611456506644} is an apocalyptic number.

It is an amenable number.

1611456506644 is a deficient number, since it is larger than the sum of its proper divisors (1322934002924).

1611456506644 is a wasteful number, since it uses less digits than its factorization.

1611456506644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161727975 (or 161727973 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 49.

The spelling of 1611456506644 in words is "one trillion, six hundred eleven billion, four hundred fifty-six million, five hundred six thousand, six hundred forty-four".