16554923721354 has 32 divisors (see below), whose sum is σ = 33880404602880. Its totient is φ = 5389885961712.

The previous prime is 16554923721319. The next prime is 16554923721403. The reversal of 16554923721354 is 45312732945561.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 16554923721294 and 16554923721303.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16095489 + ... + 17093115.

It is an arithmetic number, because the mean of its divisors is an integer number (1058762643840).

Almost surely, 2^{16554923721354} is an apocalyptic number.

16554923721354 is an abundant number, since it is smaller than the sum of its proper divisors (17325480881526).

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

16554923721354 is a wasteful number, since it uses less digits than its factorization.

16554923721354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061994.

The product of its digits is 27216000, while the sum is 57.

The spelling of 16554923721354 in words is "sixteen trillion, five hundred fifty-four billion, nine hundred twenty-three million, seven hundred twenty-one thousand, three hundred fifty-four".