1665161011050 has 48 divisors (see below), whose sum is σ = 4241210113632. Its totient is φ = 432041774400.

The previous prime is 1665161011043. The next prime is 1665161011051. The reversal of 1665161011050 is 501101615661.

It is a super-2 number, since 2×1665161011050² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1665161011051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 150008956 + ... + 150020055.

It is an arithmetic number, because the mean of its divisors is an integer number (88358544034).

Almost surely, 2^{1665161011050} is an apocalyptic number.

1665161011050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1665161011050 is an abundant number, since it is smaller than the sum of its proper divisors (2576049102582).

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

1665161011050 is a wasteful number, since it uses less digits than its factorization.

1665161011050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300029063 (or 300029058 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 33.

The spelling of 1665161011050 in words is "one trillion, six hundred sixty-five billion, one hundred sixty-one million, eleven thousand, fifty".