2161979242962 has 512 divisors, whose sum is σ = 6145871708160. Its totient is φ = 489742848000.

The previous prime is 2161979242961. The next prime is 2161979242963. The reversal of 2161979242962 is 2692429791612.

It is an interprime number because it is at equal distance from previous prime (2161979242961) and next prime (2161979242963).

It is a junction number, because it is equal to n+sod(n) for n = 2161979242896 and 2161979242905.

It is not an unprimeable number, because it can be changed into a prime (2161979242961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 896713537 + ... + 896715947.

It is an arithmetic number, because the mean of its divisors is an integer number (12003655680).

Almost surely, 2^{2161979242962} is an apocalyptic number.

2161979242962 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2161979242962, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3072935854080).

2161979242962 is an abundant number, since it is smaller than the sum of its proper divisors (3983892465198).

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

2161979242962 is a wasteful number, since it uses less digits than its factorization.

2161979242962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2638.

The product of its digits is 11757312, while the sum is 60.

The spelling of 2161979242962 in words is "two trillion, one hundred sixty-one billion, nine hundred seventy-nine million, two hundred forty-two thousand, nine hundred sixty-two".