16451435164420 has 48 divisors (see below), whose sum is σ = 37081349324208. Its totient is φ = 6108639252480.

The previous prime is 16451435164387. The next prime is 16451435164511. The reversal of 16451435164420 is 2446153415461.

It can be written as a sum of positive squares in 8 ways, for example, as 218980946116 + 16232454218304 = 467954^2 + 4028952^2 .

It is a super-2 number, since 2×16451435164420² (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 15 ways as a sum of consecutive naturals, for example, 331390071 + ... + 331439710.

It is an arithmetic number, because the mean of its divisors is an integer number (772528110921).

Almost surely, 2^{16451435164420} is an apocalyptic number.

16451435164420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16451435164420 is an abundant number, since it is smaller than the sum of its proper divisors (20629914159788).

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

16451435164420 is a wasteful number, since it uses less digits than its factorization.

16451435164420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662829880 (or 662829878 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 46.

Adding to 16451435164420 its reverse (2446153415461), we get a palindrome (18897588579881).

The spelling of 16451435164420 in words is "sixteen trillion, four hundred fifty-one billion, four hundred thirty-five million, one hundred sixty-four thousand, four hundred twenty".