21182264954 has 16 divisors (see below), whose sum is σ = 32134604040. Its totient is φ = 10471152960.

The previous prime is 21182264927. The next prime is 21182264963. The reversal of 21182264954 is 45946228112.

It can be written as a sum of positive squares in 4 ways, for example, as 14470887025 + 6711377929 = 120295^2 + 81923^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4889 + ... + 205884.

Almost surely, 2^21182264954 is an apocalyptic number.

21182264954 is a deficient number, since it is larger than the sum of its proper divisors (10952339086).

21182264954 is a wasteful number, since it uses less digits than its factorization.

21182264954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211345.

The product of its digits is 276480, while the sum is 44.

The spelling of 21182264954 in words is "twenty-one billion, one hundred eighty-two million, two hundred sixty-four thousand, nine hundred fifty-four".