16683551474625 has 256 divisors, whose sum is σ = 36355108608000. Its totient is φ = 7390745856000.

The previous prime is 16683551474591. The next prime is 16683551474651. The reversal of 16683551474625 is 52647415538661.

16683551474625 is a `hidden beast` number, since 1 + 6 + 6 + 8 + 3 + 551 + 4 + 74 + 6 + 2 + 5 = 666.

It is not a de Polignac number, because 16683551474625 - 2⁹ = 16683551474113 is a prime.

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

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 144267327 + ... + 144382923.

It is an arithmetic number, because the mean of its divisors is an integer number (142012143000).

Almost surely, 2^{16683551474625} is an apocalyptic number.

16683551474625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16683551474625 is an abundant number, since it is smaller than the sum of its proper divisors (19671557133375).

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

16683551474625 is a wasteful number, since it uses less digits than its factorization.

16683551474625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115818 (or 115802 counting only the distinct ones).

The product of its digits is 145152000, while the sum is 63.

The spelling of 16683551474625 in words is "sixteen trillion, six hundred eighty-three billion, five hundred fifty-one million, four hundred seventy-four thousand, six hundred twenty-five".