21755346266032 has 40 divisors (see below), whose sum is σ = 44441368182000. Its totient is φ = 10288461883392.

The previous prime is 21755346266023. The next prime is 21755346266033. The reversal of 21755346266032 is 23066264355712.

It is not an unprimeable number, because it can be changed into a prime (21755346266033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57805657 + ... + 58180792.

It is an arithmetic number, because the mean of its divisors is an integer number (1111034204550).

Almost surely, 2^{21755346266032} is an apocalyptic number.

It is an amenable number.

21755346266032 is an abundant number, since it is smaller than the sum of its proper divisors (22686021915968).

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

21755346266032 is a wasteful number, since it uses less digits than its factorization.

21755346266032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115987093 (or 115987087 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 52.

The spelling of 21755346266032 in words is "twenty-one trillion, seven hundred fifty-five billion, three hundred forty-six million, two hundred sixty-six thousand, thirty-two".