16557463731293 has 8 divisors (see below), whose sum is σ = 17128580798880. Its totient is φ = 15986357999920.

The previous prime is 16557463731257. The next prime is 16557463731307. The reversal of 16557463731293 is 39213736475561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16557463731293 - 2⁸ = 16557463731037 is a prime.

It is a super-2 number, since 2×16557463731293² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16557463736293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192278 + ... + 5757768.

It is an arithmetic number, because the mean of its divisors is an integer number (2141072599860).

Almost surely, 2^{16557463731293} is an apocalyptic number.

It is an amenable number.

16557463731293 is a deficient number, since it is larger than the sum of its proper divisors (571117067587).

16557463731293 is a wasteful number, since it uses less digits than its factorization.

16557463731293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5668107.

The product of its digits is 85730400, while the sum is 62.

The spelling of 16557463731293 in words is "sixteen trillion, five hundred fifty-seven billion, four hundred sixty-three million, seven hundred thirty-one thousand, two hundred ninety-three".