16767672420 has 72 divisors (see below), whose sum is σ = 48122811072. Its totient is φ = 4362295040.

The previous prime is 16767672419. The next prime is 16767672421. The reversal of 16767672420 is 2427676761.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16767672419) and next prime (16767672421).

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 16767672420.

It is not an unprimeable number, because it can be changed into a prime (16767672421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17737 + ... + 183983.

It is an arithmetic number, because the mean of its divisors is an integer number (668372376).

Almost surely, 2^16767672420 is an apocalyptic number.

16767672420 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 16767672420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24061405536).

16767672420 is an abundant number, since it is smaller than the sum of its proper divisors (31355138652).

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

16767672420 is a wasteful number, since it uses less digits than its factorization.

16767672420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166341 (or 166298 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 48.

The spelling of 16767672420 in words is "sixteen billion, seven hundred sixty-seven million, six hundred seventy-two thousand, four hundred twenty".