16121040377 has 16 divisors (see below), whose sum is σ = 18282190080. Its totient is φ = 14103346752.

The previous prime is 16121040323. The next prime is 16121040401. The reversal of 16121040377 is 77304012161.

It is a cyclic number.

It is not a de Polignac number, because 16121040377 - 2²⁰ = 16119991801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16121040317) 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 15 ways as a sum of consecutive naturals, for example, 214733 + ... + 279914.

It is an arithmetic number, because the mean of its divisors is an integer number (1142636880).

Almost surely, 2^16121040377 is an apocalyptic number.

It is an amenable number.

16121040377 is a deficient number, since it is larger than the sum of its proper divisors (2161149703).

16121040377 is a wasteful number, since it uses less digits than its factorization.

16121040377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494792.

The product of its (nonzero) digits is 7056, while the sum is 32.

The spelling of 16121040377 in words is "sixteen billion, one hundred twenty-one million, forty thousand, three hundred seventy-seven".