21253054245610 has 48 divisors (see below), whose sum is σ = 42370419633696. Its totient is φ = 7669388012000.

The previous prime is 21253054245539. The next prime is 21253054245613. The reversal of 21253054245610 is 1654245035212.

It is not an unprimeable number, because it can be changed into a prime (21253054245613) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66881596 + ... + 67198615.

It is an arithmetic number, because the mean of its divisors is an integer number (882717075702).

Almost surely, 2^{21253054245610} is an apocalyptic number.

21253054245610 is a deficient number, since it is larger than the sum of its proper divisors (21117365388086).

21253054245610 is a wasteful number, since it uses less digits than its factorization.

21253054245610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134080371 (or 134080360 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 21253054245610 in words is "twenty-one trillion, two hundred fifty-three billion, fifty-four million, two hundred forty-five thousand, six hundred ten".