21451035753 has 24 divisors (see below), whose sum is σ = 35460018048. Its totient is φ = 12240847872.

The previous prime is 21451035707. The next prime is 21451035817. The reversal of 21451035753 is 35753015412.

It is a de Polignac number, because none of the positive numbers 2^k-21451035753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21451035653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188376 + ... + 279977.

It is an arithmetic number, because the mean of its divisors is an integer number (1477500752).

Almost surely, 2^21451035753 is an apocalyptic number.

It is an amenable number.

21451035753 is a deficient number, since it is larger than the sum of its proper divisors (14008982295).

21451035753 is a wasteful number, since it uses less digits than its factorization.

21451035753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469093 (or 469090 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The spelling of 21451035753 in words is "twenty-one billion, four hundred fifty-one million, thirty-five thousand, seven hundred fifty-three".