21465434622 has 32 divisors (see below), whose sum is σ = 44122902912. Its totient is φ = 6957939744.

The previous prime is 21465434611. The next prime is 21465434633. The reversal of 21465434622 is 22643456412.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21465434611) and next prime (21465434633).

It is a super-2 number, since 2×21465434622² (a number of 21 digits) contains 22 as substring.

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, 124693 + ... + 241824.

It is an arithmetic number, because the mean of its divisors is an integer number (1378840716).

Almost surely, 2^21465434622 is an apocalyptic number.

21465434622 is an abundant number, since it is smaller than the sum of its proper divisors (22657468290).

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

21465434622 is a wasteful number, since it uses less digits than its factorization.

21465434622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366792.

The product of its digits is 276480, while the sum is 39.

The spelling of 21465434622 in words is "twenty-one billion, four hundred sixty-five million, four hundred thirty-four thousand, six hundred twenty-two".