21740552564370 has 32 divisors (see below), whose sum is σ = 52179072378048. Its totient is φ = 5797286659008.

The previous prime is 21740552564333. The next prime is 21740552564377. The reversal of 21740552564370 is 7346525504712.

It is not an unprimeable number, because it can be changed into a prime (21740552564377) 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, 11214084 + ... + 13009103.

It is an arithmetic number, because the mean of its divisors is an integer number (1630596011814).

Almost surely, 2^{21740552564370} is an apocalyptic number.

21740552564370 is an abundant number, since it is smaller than the sum of its proper divisors (30438519813678).

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

21740552564370 is a wasteful number, since it uses less digits than its factorization.

21740552564370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24253114.

The product of its (nonzero) digits is 7056000, while the sum is 51.

The spelling of 21740552564370 in words is "twenty-one trillion, seven hundred forty billion, five hundred fifty-two million, five hundred sixty-four thousand, three hundred seventy".