66620112156070 has 32 divisors (see below), whose sum is σ = 133601029572096. Its totient is φ = 23710059256800.

The previous prime is 66620112156061. The next prime is 66620112156121. The reversal of 66620112156070 is 7065121102666.

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, 6442945716 + ... + 6442956055.

It is an arithmetic number, because the mean of its divisors is an integer number (4175032174128).

Almost surely, 2^{66620112156070} is an apocalyptic number.

66620112156070 is an abundant number, since it is smaller than the sum of its proper divisors (66980917416026).

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

66620112156070 is a wasteful number, since it uses less digits than its factorization.

66620112156070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12885901836.

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

The spelling of 66620112156070 in words is "sixty-six trillion, six hundred twenty billion, one hundred twelve million, one hundred fifty-six thousand, seventy".