16561237129354 has 8 divisors (see below), whose sum is σ = 24844317507648. Its totient is φ = 8279797960140.

The previous prime is 16561237129277. The next prime is 16561237129361. The reversal of 16561237129354 is 45392173216561.

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

It is a junction number, because it is equal to n+sod(n) for n = 16561237129295 and 16561237129304.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410277042 + ... + 410317405.

It is an arithmetic number, because the mean of its divisors is an integer number (3105539688456).

Almost surely, 2^{16561237129354} is an apocalyptic number.

16561237129354 is a deficient number, since it is larger than the sum of its proper divisors (8283080378294).

16561237129354 is a wasteful number, since it uses less digits than its factorization.

16561237129354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820604540.

The product of its digits is 8164800, while the sum is 55.

The spelling of 16561237129354 in words is "sixteen trillion, five hundred sixty-one billion, two hundred thirty-seven million, one hundred twenty-nine thousand, three hundred fifty-four".