66142912750 has 32 divisors (see below), whose sum is σ = 123853253472. Its totient is φ = 26449960000.

The previous prime is 66142912747. The next prime is 66142912777. The reversal of 66142912750 is 5721924166.

It is a super-2 number, since 2×66142912750² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66142912697 and 66142912706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 936165 + ... + 1004335.

It is an arithmetic number, because the mean of its divisors is an integer number (3870414171).

Almost surely, 2^66142912750 is an apocalyptic number.

66142912750 is a deficient number, since it is larger than the sum of its proper divisors (57710340722).

66142912750 is a wasteful number, since it uses less digits than its factorization.

66142912750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72069 (or 72059 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 66142912750 in words is "sixty-six billion, one hundred forty-two million, nine hundred twelve thousand, seven hundred fifty".