66153722353450 has 48 divisors (see below), whose sum is σ = 126463220657280. Its totient is φ = 25736585022720.

The previous prime is 66153722353421. The next prime is 66153722353561. The reversal of 66153722353450 is 5435322735166.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124718767 + ... + 125248066.

It is an arithmetic number, because the mean of its divisors is an integer number (2634650430360).

Almost surely, 2^{66153722353450} is an apocalyptic number.

66153722353450 is a deficient number, since it is larger than the sum of its proper divisors (60309498303830).

66153722353450 is a wasteful number, since it uses less digits than its factorization.

66153722353450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249966991 (or 249966986 counting only the distinct ones).

The product of its (nonzero) digits is 13608000, while the sum is 52.

The spelling of 66153722353450 in words is "sixty-six trillion, one hundred fifty-three billion, seven hundred twenty-two million, three hundred fifty-three thousand, four hundred fifty".