16632015780 has 96 divisors (see below), whose sum is σ = 47889805824. Its totient is φ = 4309784064.

The previous prime is 16632015779. The next prime is 16632015791. The reversal of 16632015780 is 8751023661.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1889269 + ... + 1898051.

It is an arithmetic number, because the mean of its divisors is an integer number (498852144).

Almost surely, 2^16632015780 is an apocalyptic number.

16632015780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16632015780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23944902912).

16632015780 is an abundant number, since it is smaller than the sum of its proper divisors (31257790044).

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

16632015780 is a wasteful number, since it uses less digits than its factorization.

16632015780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9685 (or 9683 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 16632015780 in words is "sixteen billion, six hundred thirty-two million, fifteen thousand, seven hundred eighty".