66737473850 has 96 divisors (see below), whose sum is σ = 127881815040. Its totient is φ = 25903800000.

The previous prime is 66737473849. The next prime is 66737473897. The reversal of 66737473850 is 5837473766.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 82289945 + ... + 82290755.

It is an arithmetic number, because the mean of its divisors is an integer number (1332102240).

Almost surely, 2^66737473850 is an apocalyptic number.

66737473850 is a deficient number, since it is larger than the sum of its proper divisors (61144341190).

66737473850 is a wasteful number, since it uses less digits than its factorization.

66737473850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236 (or 1231 counting only the distinct ones).

The product of its (nonzero) digits is 17781120, while the sum is 56.

The spelling of 66737473850 in words is "sixty-six billion, seven hundred thirty-seven million, four hundred seventy-three thousand, eight hundred fifty".