16651525391404 has 48 divisors (see below), whose sum is σ = 31631330164896. Its totient is φ = 7638966374400.

The previous prime is 16651525391399. The next prime is 16651525391411. The reversal of 16651525391404 is 40419352515661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1286152 + ... + 5912464.

It is an arithmetic number, because the mean of its divisors is an integer number (658986045102).

Almost surely, 2^{16651525391404} is an apocalyptic number.

It is an amenable number.

16651525391404 is a deficient number, since it is larger than the sum of its proper divisors (14979804773492).

16651525391404 is a wasteful number, since it uses less digits than its factorization.

16651525391404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4627666 (or 4627664 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 52.

The spelling of 16651525391404 in words is "sixteen trillion, six hundred fifty-one billion, five hundred twenty-five million, three hundred ninety-one thousand, four hundred four".