16557007363525 has 12 divisors (see below), whose sum is σ = 20722564733472. Its totient is φ = 13121815179440.

The previous prime is 16557007363517. The next prime is 16557007363543. The reversal of 16557007363525 is 52536370075561.

It is a happy number.

It is not a de Polignac number, because 16557007363525 - 2³ = 16557007363517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3094765057 + ... + 3094770406.

It is an arithmetic number, because the mean of its divisors is an integer number (1726880394456).

Almost surely, 2^{16557007363525} is an apocalyptic number.

It is an amenable number.

16557007363525 is a deficient number, since it is larger than the sum of its proper divisors (4165557369947).

16557007363525 is a wasteful number, since it uses less digits than its factorization.

16557007363525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6189535580 (or 6189535575 counting only the distinct ones).

The product of its (nonzero) digits is 19845000, while the sum is 55.

The spelling of 16557007363525 in words is "sixteen trillion, five hundred fifty-seven billion, seven million, three hundred sixty-three thousand, five hundred twenty-five".