16425544391390 has 64 divisors (see below), whose sum is σ = 30910232102400. Its totient is φ = 6277279680000.

The previous prime is 16425544391381. The next prime is 16425544391411. The reversal of 16425544391390 is 9319344552461.

It is a happy number.

It is a super-2 number, since 2×16425544391390² (a number of 27 digits) contains 22 as substring.

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, 10175600 + ... + 11678780.

It is an arithmetic number, because the mean of its divisors is an integer number (482972376600).

Almost surely, 2^{16425544391390} is an apocalyptic number.

16425544391390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16425544391390 is a deficient number, since it is larger than the sum of its proper divisors (14484687711010).

16425544391390 is a wasteful number, since it uses less digits than its factorization.

16425544391390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503669.

The product of its (nonzero) digits is 13996800, while the sum is 56.

The spelling of 16425544391390 in words is "sixteen trillion, four hundred twenty-five billion, five hundred forty-four million, three hundred ninety-one thousand, three hundred ninety".