66770101040 has 20 divisors (see below), whose sum is σ = 155240485104. Its totient is φ = 26708040384.

The previous prime is 66770101003. The next prime is 66770101043. The reversal of 66770101040 is 4010107766.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 66770100988 and 66770101006.

It is not an unprimeable number, because it can be changed into a prime (66770101043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417313052 + ... + 417313211.

Almost surely, 2^66770101040 is an apocalyptic number.

It is an amenable number.

66770101040 is an abundant number, since it is smaller than the sum of its proper divisors (88470384064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66770101040 is a wasteful number, since it uses less digits than its factorization.

66770101040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834626276 (or 834626270 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The spelling of 66770101040 in words is "sixty-six billion, seven hundred seventy million, one hundred one thousand, forty".