2150691809946 has 64 divisors (see below), whose sum is σ = 4633280165376. Its totient is φ = 663061939200.

The previous prime is 2150691809891. The next prime is 2150691809947. The reversal of 2150691809946 is 6499081960512.

It is a super-2 number, since 2×2150691809946² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2150691809946.

It is not an unprimeable number, because it can be changed into a prime (2150691809947) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6706176 + ... + 7019556.

It is an arithmetic number, because the mean of its divisors is an integer number (72395002584).

Almost surely, 2^{2150691809946} is an apocalyptic number.

2150691809946 is an abundant number, since it is smaller than the sum of its proper divisors (2482588355430).

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

2150691809946 is a wasteful number, since it uses less digits than its factorization.

2150691809946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314567.

The product of its (nonzero) digits is 8398080, while the sum is 60.

The spelling of 2150691809946 in words is "two trillion, one hundred fifty billion, six hundred ninety-one million, eight hundred nine thousand, nine hundred forty-six".