2161496261232 has 480 divisors, whose sum is σ = 8027424497664. Its totient is φ = 525627187200.

The previous prime is 2161496261219. The next prime is 2161496261251. The reversal of 2161496261232 is 2321626941612.

2161496261232 is a `hidden beast` number, since 2 + 1 + 6 + 1 + 4 + 9 + 626 + 12 + 3 + 2 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 35972718 + ... + 36032754.

Almost surely, 2^{2161496261232} is an apocalyptic number.

2161496261232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2161496261232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4013712248832).

2161496261232 is an abundant number, since it is smaller than the sum of its proper divisors (5865928236432).

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

2161496261232 is a wasteful number, since it uses less digits than its factorization.

2161496261232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60277 (or 60268 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The spelling of 2161496261232 in words is "two trillion, one hundred sixty-one billion, four hundred ninety-six million, two hundred sixty-one thousand, two hundred thirty-two".