21440266753722 has 32 divisors (see below), whose sum is σ = 43696865318400. Its totient is φ = 7011197744688.

The previous prime is 21440266753669. The next prime is 21440266753727. The reversal of 21440266753722 is 22735766204412.

It is not an unprimeable number, because it can be changed into a prime (21440266753727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62010072 + ... + 62354867.

It is an arithmetic number, because the mean of its divisors is an integer number (1365527041200).

Almost surely, 2^{21440266753722} is an apocalyptic number.

21440266753722 is an abundant number, since it is smaller than the sum of its proper divisors (22256598564678).

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

21440266753722 is a wasteful number, since it uses less digits than its factorization.

21440266753722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124365490.

The product of its (nonzero) digits is 6773760, while the sum is 51.

The spelling of 21440266753722 in words is "twenty-one trillion, four hundred forty billion, two hundred sixty-six million, seven hundred fifty-three thousand, seven hundred twenty-two".