21347929763094 has 32 divisors (see below), whose sum is σ = 47713333046400. Its totient is φ = 6311287438400.

The previous prime is 21347929763093. The next prime is 21347929763143. The reversal of 21347929763094 is 49036792974312.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21347929763093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3944551944 + ... + 3944557355.

It is an arithmetic number, because the mean of its divisors is an integer number (1491041657700).

Almost surely, 2^{21347929763094} is an apocalyptic number.

21347929763094 is an abundant number, since it is smaller than the sum of its proper divisors (26365403283306).

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

21347929763094 is a wasteful number, since it uses less digits than its factorization.

21347929763094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7889109356.

The product of its (nonzero) digits is 123451776, while the sum is 66.

The spelling of 21347929763094 in words is "twenty-one trillion, three hundred forty-seven billion, nine hundred twenty-nine million, seven hundred sixty-three thousand, ninety-four".