400066666707 has 16 divisors (see below), whose sum is σ = 561518424320. Its totient is φ = 252664077600.

The previous prime is 400066666673. The next prime is 400066666759. The reversal of 400066666707 is 707666660004.

It is not a de Polignac number, because 400066666707 - 2¹⁶ = 400066601171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400066616707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1567482 + ... + 1804752.

It is an arithmetic number, because the mean of its divisors is an integer number (35094901520).

Almost surely, 2^400066666707 is an apocalyptic number.

400066666707 is a deficient number, since it is larger than the sum of its proper divisors (161451757613).

400066666707 is a wasteful number, since it uses less digits than its factorization.

400066666707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266874.

The product of its (nonzero) digits is 1524096, while the sum is 48.

The spelling of 400066666707 in words is "four hundred billion, sixty-six million, six hundred sixty-six thousand, seven hundred seven".