21624053145452 has 24 divisors (see below), whose sum is σ = 38927842475424. Its totient is φ = 10502759659392.

The previous prime is 21624053145433. The next prime is 21624053145469. The reversal of 21624053145452 is 25454135042612.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118311008 + ... + 118493639.

It is an arithmetic number, because the mean of its divisors is an integer number (1621993436476).

Almost surely, 2^{21624053145452} is an apocalyptic number.

It is an amenable number.

21624053145452 is a deficient number, since it is larger than the sum of its proper divisors (17303789329972).

21624053145452 is a wasteful number, since it uses less digits than its factorization.

21624053145452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236805305 (or 236805303 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 44.

The spelling of 21624053145452 in words is "twenty-one trillion, six hundred twenty-four billion, fifty-three million, one hundred forty-five thousand, four hundred fifty-two".