21439267619007 has 32 divisors (see below), whose sum is σ = 32686770386944. Its totient is φ = 12244483065600.

The previous prime is 21439267618987. The next prime is 21439267619017. The reversal of 21439267619007 is 70091676293412.

It is a happy number.

It is not a de Polignac number, because 21439267619007 - 2¹⁰ = 21439267617983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21439267619017) 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, 313951707 + ... + 314019987.

It is an arithmetic number, because the mean of its divisors is an integer number (1021461574592).

Almost surely, 2^{21439267619007} is an apocalyptic number.

21439267619007 is a deficient number, since it is larger than the sum of its proper divisors (11247502767937).

21439267619007 is a wasteful number, since it uses less digits than its factorization.

21439267619007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76039.

The product of its (nonzero) digits is 6858432, while the sum is 57.

The spelling of 21439267619007 in words is "twenty-one trillion, four hundred thirty-nine billion, two hundred sixty-seven million, six hundred nineteen thousand, seven".