1661650200524 has 6 divisors (see below), whose sum is σ = 2907887850924. Its totient is φ = 830825100260.

The previous prime is 1661650200499. The next prime is 1661650200641. The reversal of 1661650200524 is 4250020561661.

It is a super-2 number, since 2×1661650200524² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 207706275062 + ... + 207706275069.

It is an arithmetic number, because the mean of its divisors is an integer number (484647975154).

Almost surely, 2^{1661650200524} is an apocalyptic number.

It is an amenable number.

1661650200524 is a deficient number, since it is larger than the sum of its proper divisors (1246237650400).

1661650200524 is a wasteful number, since it uses less digits than its factorization.

1661650200524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415412550135 (or 415412550133 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 1661650200524 in words is "one trillion, six hundred sixty-one billion, six hundred fifty million, two hundred thousand, five hundred twenty-four".