16427891427656 has 32 divisors (see below), whose sum is σ = 33100975283040. Its totient is φ = 7615387769088.

The previous prime is 16427891427653. The next prime is 16427891427659. The reversal of 16427891427656 is 65672419872461.

It is an interprime number because it is at equal distance from previous prime (16427891427653) and next prime (16427891427659).

It is a Harshad number since it is a multiple of its sum of digits (68).

It is not an unprimeable number, because it can be changed into a prime (16427891427653) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 901433570 + ... + 901451793.

It is an arithmetic number, because the mean of its divisors is an integer number (1034405477595).

Almost surely, 2^{16427891427656} is an apocalyptic number.

It is an amenable number.

16427891427656 is an abundant number, since it is smaller than the sum of its proper divisors (16673083855384).

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

16427891427656 is a wasteful number, since it uses less digits than its factorization.

16427891427656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1802885453 (or 1802885449 counting only the distinct ones).

The product of its digits is 243855360, while the sum is 68.

The spelling of 16427891427656 in words is "sixteen trillion, four hundred twenty-seven billion, eight hundred ninety-one million, four hundred twenty-seven thousand, six hundred fifty-six".