1616161629644 has 24 divisors (see below), whose sum is σ = 2889630750720. Its totient is φ = 790566792336.

The previous prime is 1616161629623. The next prime is 1616161629671. The reversal of 1616161629644 is 4469261616161.

It is a happy number.

It is a super-2 number, since 2×1616161629644² (a number of 25 digits) contains 22 as substring.

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, 1278524 + ... + 2206115.

It is an arithmetic number, because the mean of its divisors is an integer number (120401281280).

Almost surely, 2^{1616161629644} is an apocalyptic number.

It is an amenable number.

1616161629644 is a deficient number, since it is larger than the sum of its proper divisors (1273469121076).

1616161629644 is a wasteful number, since it uses less digits than its factorization.

1616161629644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3487157 (or 3487155 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 53.

The spelling of 1616161629644 in words is "one trillion, six hundred sixteen billion, one hundred sixty-one million, six hundred twenty-nine thousand, six hundred forty-four".