2161641631150 has 24 divisors (see below), whose sum is σ = 4020951705120. Its totient is φ = 864592508160.

The previous prime is 2161641631129. The next prime is 2161641631153. The reversal of 2161641631150 is 511361461612.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161641631153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 919990 + ... + 2273689.

It is an arithmetic number, because the mean of its divisors is an integer number (167539654380).

Almost surely, 2^{2161641631150} is an apocalyptic number.

2161641631150 is a deficient number, since it is larger than the sum of its proper divisors (1859310073970).

2161641631150 is a wasteful number, since it uses less digits than its factorization.

2161641631150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3207228 (or 3207223 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 2161641631150 in words is "two trillion, one hundred sixty-one billion, six hundred forty-one million, six hundred thirty-one thousand, one hundred fifty".