16425575478 has 24 divisors (see below), whose sum is σ = 38326343328. Its totient is φ = 5054023152.

The previous prime is 16425575473. The next prime is 16425575489. The reversal of 16425575478 is 87457552461.

It is a happy number.

16425575478 is a `hidden beast` number, since 1 + 6 + 4 + 25 + 575 + 47 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16425575473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35097150 + ... + 35097617.

It is an arithmetic number, because the mean of its divisors is an integer number (1596930972).

Almost surely, 2^16425575478 is an apocalyptic number.

16425575478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16425575478 is an abundant number, since it is smaller than the sum of its proper divisors (21900767850).

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

16425575478 is a wasteful number, since it uses less digits than its factorization.

16425575478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70194788 (or 70194785 counting only the distinct ones).

The product of its digits is 9408000, while the sum is 54.

The spelling of 16425575478 in words is "sixteen billion, four hundred twenty-five million, five hundred seventy-five thousand, four hundred seventy-eight".