210145562456 has 8 divisors (see below), whose sum is σ = 394022929620. Its totient is φ = 105072781224.

The previous prime is 210145562447. The next prime is 210145562519. The reversal of 210145562456 is 654265541012.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×210145562456² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13134097646 + ... + 13134097661.

Almost surely, 2^210145562456 is an apocalyptic number.

It is an amenable number.

210145562456 is a deficient number, since it is larger than the sum of its proper divisors (183877367164).

210145562456 is a wasteful number, since it uses less digits than its factorization.

210145562456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26268195313 (or 26268195309 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 41.

The spelling of 210145562456 in words is "two hundred ten billion, one hundred forty-five million, five hundred sixty-two thousand, four hundred fifty-six".