20867369472 has 160 divisors (see below), whose sum is σ = 61912287360. Its totient is φ = 6939648000.

The previous prime is 20867369431. The next prime is 20867369503. The reversal of 20867369472 is 27496376802.

20867369472 is a `hidden beast` number, since 20 + 86 + 73 + 6 + 9 + 472 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 6951972 + ... + 6954972.

It is an arithmetic number, because the mean of its divisors is an integer number (386951796).

Almost surely, 2^20867369472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20867369472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30956143680).

20867369472 is an abundant number, since it is smaller than the sum of its proper divisors (41044917888).

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

20867369472 is an equidigital number, since it uses as much as digits as its factorization.

20867369472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3531 (or 3509 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The spelling of 20867369472 in words is "twenty billion, eight hundred sixty-seven million, three hundred sixty-nine thousand, four hundred seventy-two".