21485148677076 has 24 divisors (see below), whose sum is σ = 57293729805760. Its totient is φ = 6138613907712.

The previous prime is 21485148677021. The next prime is 21485148677093. The reversal of 21485148677076 is 67077684158412.

It is a super-2 number, since 2×21485148677076² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21485148676998 and 21485148677016.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 127887789661 + ... + 127887789828.

Almost surely, 2^{21485148677076} is an apocalyptic number.

It is an amenable number.

21485148677076 is an abundant number, since it is smaller than the sum of its proper divisors (35808581128684).

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

21485148677076 is a wasteful number, since it uses less digits than its factorization.

21485148677076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255775579503 (or 255775579501 counting only the distinct ones).

The product of its (nonzero) digits is 126443520, while the sum is 66.

The spelling of 21485148677076 in words is "twenty-one trillion, four hundred eighty-five billion, one hundred forty-eight million, six hundred seventy-seven thousand, seventy-six".