16121736570 has 64 divisors (see below), whose sum is σ = 40216901760. Its totient is φ = 4132516608.

The previous prime is 16121736559. The next prime is 16121736571. The reversal of 16121736570 is 7563712161.

It is not an unprimeable number, because it can be changed into a prime (16121736571) 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 31 ways as a sum of consecutive naturals, for example, 4636 + ... + 179624.

It is an arithmetic number, because the mean of its divisors is an integer number (628389090).

Almost surely, 2^16121736570 is an apocalyptic number.

16121736570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16121736570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20108450880).

16121736570 is an abundant number, since it is smaller than the sum of its proper divisors (24095165190).

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

16121736570 is a wasteful number, since it uses less digits than its factorization.

16121736570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175119.

The product of its (nonzero) digits is 52920, while the sum is 39.

The spelling of 16121736570 in words is "sixteen billion, one hundred twenty-one million, seven hundred thirty-six thousand, five hundred seventy".