16405786274472 has 96 divisors (see below), whose sum is σ = 50780390431680. Its totient is φ = 4687314359040.

The previous prime is 16405786274459. The next prime is 16405786274477. The reversal of 16405786274472 is 27447268750461.

It is a happy number.

16405786274472 is a `hidden beast` number, since 1 + 6 + 40 + 57 + 8 + 6 + 2 + 74 + 472 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (16405786274477) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73347847 + ... + 73571177.

It is an arithmetic number, because the mean of its divisors is an integer number (528962400330).

Almost surely, 2^{16405786274472} is an apocalyptic number.

16405786274472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16405786274472 is an abundant number, since it is smaller than the sum of its proper divisors (34374604157208).

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

16405786274472 is a wasteful number, since it uses less digits than its factorization.

16405786274472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369103 (or 369096 counting only the distinct ones).

The product of its (nonzero) digits is 126443520, while the sum is 63.

The spelling of 16405786274472 in words is "sixteen trillion, four hundred five billion, seven hundred eighty-six million, two hundred seventy-four thousand, four hundred seventy-two".