16451402331402 has 96 divisors (see below), whose sum is σ = 38014475990400. Its totient is φ = 5123964294144.

The previous prime is 16451402331323. The next prime is 16451402331431. The reversal of 16451402331402 is 20413320415461.

16451402331402 is a `hidden beast` number, since 1 + 6 + 4 + 5 + 14 + 0 + 233 + 1 + 402 = 666.

It is a super-2 number, since 2×16451402331402² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41142549 + ... + 41540487.

It is an arithmetic number, because the mean of its divisors is an integer number (395984124900).

Almost surely, 2^{16451402331402} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16451402331402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19007237995200).

16451402331402 is an abundant number, since it is smaller than the sum of its proper divisors (21563073658998).

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

16451402331402 is a wasteful number, since it uses less digits than its factorization.

16451402331402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398940 (or 398937 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 16451402331402 its reverse (20413320415461), we get a palindrome (36864722746863).

The spelling of 16451402331402 in words is "sixteen trillion, four hundred fifty-one billion, four hundred two million, three hundred thirty-one thousand, four hundred two".