2011012165650 has 96 divisors (see below), whose sum is σ = 5281824227328. Its totient is φ = 505297742400.

The previous prime is 2011012165579. The next prime is 2011012165691. The reversal of 2011012165650 is 565612101102.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4118866 + ... + 4581165.

It is an arithmetic number, because the mean of its divisors is an integer number (55019002368).

Almost surely, 2^{2011012165650} is an apocalyptic number.

2011012165650 is an abundant number, since it is smaller than the sum of its proper divisors (3270812061678).

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

2011012165650 is a wasteful number, since it uses less digits than its factorization.

2011012165650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8700136 (or 8700131 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

Adding to 2011012165650 its reverse (565612101102), we get a palindrome (2576624266752).

The spelling of 2011012165650 in words is "two trillion, eleven billion, twelve million, one hundred sixty-five thousand, six hundred fifty".