21496203427790 has 64 divisors (see below), whose sum is σ = 47696422427136. Its totient is φ = 6792613471872.

The previous prime is 21496203427723. The next prime is 21496203427807. The reversal of 21496203427790 is 9772430269412.

It is a super-3 number, since 3×21496203427790³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17783612 + ... + 18953871.

It is an arithmetic number, because the mean of its divisors is an integer number (745256600424).

Almost surely, 2^{21496203427790} is an apocalyptic number.

21496203427790 is an abundant number, since it is smaller than the sum of its proper divisors (26200218999346).

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

21496203427790 is a wasteful number, since it uses less digits than its factorization.

21496203427790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36738153.

The product of its (nonzero) digits is 9144576, while the sum is 56.

The spelling of 21496203427790 in words is "twenty-one trillion, four hundred ninety-six billion, two hundred three million, four hundred twenty-seven thousand, seven hundred ninety".