1616364366661 has 16 divisors (see below), whose sum is σ = 1765010585088. Its totient is φ = 1468002610800.

The previous prime is 1616364366653. The next prime is 1616364366667. The reversal of 1616364366661 is 1666634636161.

It is not a de Polignac number, because 1616364366661 - 2³ = 1616364366653 is a prime.

It is a super-2 number, since 2×1616364366661² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616364366667) 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, 122789466 + ... + 122802628.

It is an arithmetic number, because the mean of its divisors is an integer number (110313161568).

Almost surely, 2^{1616364366661} is an apocalyptic number.

1616364366661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1616364366661 is a deficient number, since it is larger than the sum of its proper divisors (148646218427).

1616364366661 is a wasteful number, since it uses less digits than its factorization.

1616364366661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23112.

The product of its digits is 10077696, while the sum is 55.

The spelling of 1616364366661 in words is "one trillion, six hundred sixteen billion, three hundred sixty-four million, three hundred sixty-six thousand, six hundred sixty-one".