16261431102 has 64 divisors (see below), whose sum is σ = 41431119360. Its totient is φ = 4631245632.

The previous prime is 16261431091. The next prime is 16261431133. The reversal of 16261431102 is 20113416261.

It is a happy number.

16261431102 is a `hidden beast` number, since 1 + 6 + 2 + 614 + 31 + 10 + 2 = 666.

16261431102 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49593 + ... + 187035.

It is an arithmetic number, because the mean of its divisors is an integer number (647361240).

Almost surely, 2^16261431102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16261431102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20715559680).

16261431102 is an abundant number, since it is smaller than the sum of its proper divisors (25169688258).

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

16261431102 is a wasteful number, since it uses less digits than its factorization.

16261431102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137774 (or 137768 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 16261431102 its reverse (20113416261), we get a palindrome (36374847363).

The spelling of 16261431102 in words is "sixteen billion, two hundred sixty-one million, four hundred thirty-one thousand, one hundred two".