21467215704732 has 96 divisors (see below), whose sum is σ = 60650760199680. Its totient is φ = 5769130444800.

The previous prime is 21467215704731. The next prime is 21467215704757. The reversal of 21467215704732 is 23740751276412.

It is a happy number.

It is a super-2 number, since 2×21467215704732² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21467215704731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2330769 + ... + 6954632.

It is an arithmetic number, because the mean of its divisors is an integer number (631778752080).

Almost surely, 2^{21467215704732} is an apocalyptic number.

It is an amenable number.

21467215704732 is an abundant number, since it is smaller than the sum of its proper divisors (39183544494948).

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

21467215704732 is a wasteful number, since it uses less digits than its factorization.

21467215704732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9287051 (or 9287049 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 51.

The spelling of 21467215704732 in words is "twenty-one trillion, four hundred sixty-seven billion, two hundred fifteen million, seven hundred four thousand, seven hundred thirty-two".