21152530630426 has 16 divisors (see below), whose sum is σ = 34200907259904. Its totient is φ = 9753725101104.

The previous prime is 21152530630411. The next prime is 21152530630499. The reversal of 21152530630426 is 62403603525112.

It is a super-2 number, since 2×21152530630426² (a number of 27 digits) contains 22 as substring.

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, 374193850 + ... + 374250373.

It is an arithmetic number, because the mean of its divisors is an integer number (2137556703744).

Almost surely, 2^{21152530630426} is an apocalyptic number.

21152530630426 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21152530630426 is a deficient number, since it is larger than the sum of its proper divisors (13048376629478).

21152530630426 is a wasteful number, since it uses less digits than its factorization.

21152530630426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748445325.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 21152530630426 in words is "twenty-one trillion, one hundred fifty-two billion, five hundred thirty million, six hundred thirty thousand, four hundred twenty-six".