66926647270 has 32 divisors (see below), whose sum is σ = 137686805568. Its totient is φ = 22944757248.

The previous prime is 66926647259. The next prime is 66926647283. The reversal of 66926647270 is 7274662966.

It is a super-2 number, since 2×66926647270² (a number of 22 digits) contains 22 as substring.

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, 1709434 + ... + 1748146.

It is an arithmetic number, because the mean of its divisors is an integer number (4302712674).

Almost surely, 2^66926647270 is an apocalyptic number.

66926647270 is an abundant number, since it is smaller than the sum of its proper divisors (70760158298).

66926647270 is a wasteful number, since it uses less digits than its factorization.

66926647270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63424.

The product of its (nonzero) digits is 9144576, while the sum is 55.

The spelling of 66926647270 in words is "sixty-six billion, nine hundred twenty-six million, six hundred forty-seven thousand, two hundred seventy".