21346787196 has 48 divisors (see below), whose sum is σ = 63249742080. Its totient is φ = 6099081840.

The previous prime is 21346787153. The next prime is 21346787201. The reversal of 21346787196 is 69178764312.

21346787196 is a `hidden beast` number, since 2 + 13 + 467 + 87 + 1 + 96 = 666.

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

It is a congruent number.

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, 14117490 + ... + 14119001.

It is an arithmetic number, because the mean of its divisors is an integer number (1317702960).

Almost surely, 2^21346787196 is an apocalyptic number.

It is an amenable number.

21346787196 is an abundant number, since it is smaller than the sum of its proper divisors (41902954884).

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

21346787196 is a wasteful number, since it uses less digits than its factorization.

21346787196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28236511 (or 28236503 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The spelling of 21346787196 in words is "twenty-one billion, three hundred forty-six million, seven hundred eighty-seven thousand, one hundred ninety-six".