21507527007722 has 32 divisors (see below), whose sum is σ = 36898777055232. Its totient is φ = 9210330387504.

The previous prime is 21507527007719. The next prime is 21507527007739. The reversal of 21507527007722 is 22770072570512.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187213703 + ... + 187328549.

It is an arithmetic number, because the mean of its divisors is an integer number (1153086782976).

Almost surely, 2^{21507527007722} is an apocalyptic number.

21507527007722 is a deficient number, since it is larger than the sum of its proper divisors (15391250047510).

21507527007722 is a wasteful number, since it uses less digits than its factorization.

21507527007722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125162.

The product of its (nonzero) digits is 960400, while the sum is 47.

The spelling of 21507527007722 in words is "twenty-one trillion, five hundred seven billion, five hundred twenty-seven million, seven thousand, seven hundred twenty-two".