400700766671 has 4 divisors (see below), whose sum is σ = 410473956144. Its totient is φ = 390927577200.

The previous prime is 400700766667. The next prime is 400700766677. The reversal of 400700766671 is 176667007004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400700766671 - 2² = 400700766667 is a prime.

It is a super-2 number, since 2×400700766671² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400700766677) 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, 4886594675 + ... + 4886594756.

It is an arithmetic number, because the mean of its divisors is an integer number (102618489036).

Almost surely, 2^400700766671 is an apocalyptic number.

400700766671 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

400700766671 is a deficient number, since it is larger than the sum of its proper divisors (9773189473).

400700766671 is an equidigital number, since it uses as much as digits as its factorization.

400700766671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9773189472.

The product of its (nonzero) digits is 296352, while the sum is 44.

The spelling of 400700766671 in words is "four hundred billion, seven hundred million, seven hundred sixty-six thousand, six hundred seventy-one".