21235346421632 has 96 divisors (see below), whose sum is σ = 49213649520000. Its totient is φ = 9100501573632.

The previous prime is 21235346421631. The next prime is 21235346421659. The reversal of 21235346421632 is 23612464353212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21235346421631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 210682544 + ... + 210783312.

It is an arithmetic number, because the mean of its divisors is an integer number (512642182500).

Almost surely, 2^{21235346421632} is an apocalyptic number.

It is an amenable number.

21235346421632 is an abundant number, since it is smaller than the sum of its proper divisors (27978303098368).

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

21235346421632 is a wasteful number, since it uses less digits than its factorization.

21235346421632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134396 (or 134377 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 44.

The spelling of 21235346421632 in words is "twenty-one trillion, two hundred thirty-five billion, three hundred forty-six million, four hundred twenty-one thousand, six hundred thirty-two".