2161652461332 has 96 divisors (see below), whose sum is σ = 6209755104000. Its totient is φ = 569928655872.

The previous prime is 2161652461321. The next prime is 2161652461333. The reversal of 2161652461332 is 2331642561612.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161652461333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3219544 + ... + 3832592.

It is an arithmetic number, because the mean of its divisors is an integer number (64684949000).

Almost surely, 2^{2161652461332} is an apocalyptic number.

It is an amenable number.

2161652461332 is an abundant number, since it is smaller than the sum of its proper divisors (4048102642668).

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

2161652461332 is a wasteful number, since it uses less digits than its factorization.

2161652461332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616305 (or 616303 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The spelling of 2161652461332 in words is "two trillion, one hundred sixty-one billion, six hundred fifty-two million, four hundred sixty-one thousand, three hundred thirty-two".