2116631402340 has 192 divisors, whose sum is σ = 7299305631744. Its totient is φ = 446275671552.

The previous prime is 2116631402339. The next prime is 2116631402393. The reversal of 2116631402340 is 432041366112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7766667 + ... + 8034573.

It is an arithmetic number, because the mean of its divisors is an integer number (38017216832).

Almost surely, 2^{2116631402340} is an apocalyptic number.

2116631402340 is a gapful number since it is divisible by the number (20) 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 2116631402340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3649652815872).

2116631402340 is an abundant number, since it is smaller than the sum of its proper divisors (5182674229404).

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

2116631402340 is a wasteful number, since it uses less digits than its factorization.

2116631402340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269386 (or 269384 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

Adding to 2116631402340 its reverse (432041366112), we get a palindrome (2548672768452).

The spelling of 2116631402340 in words is "two trillion, one hundred sixteen billion, six hundred thirty-one million, four hundred two thousand, three hundred forty".