20611301600 has 36 divisors (see below), whose sum is σ = 50317341984. Its totient is φ = 8244520320.

The previous prime is 20611301597. The next prime is 20611301603. The reversal of 20611301600 is 610311602.

It is an interprime number because it is at equal distance from previous prime (20611301597) and next prime (20611301603).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20611301603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12881264 + ... + 12882863.

It is an arithmetic number, because the mean of its divisors is an integer number (1397703944).

Almost surely, 2^20611301600 is an apocalyptic number.

20611301600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20611301600 is an abundant number, since it is smaller than the sum of its proper divisors (29706040384).

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

20611301600 is a wasteful number, since it uses less digits than its factorization.

20611301600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25764147 (or 25764134 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The spelling of 20611301600 in words is "twenty billion, six hundred eleven million, three hundred one thousand, six hundred".