11780401767 has 4 divisors (see below), whose sum is σ = 15707202360. Its totient is φ = 7853601176.

The previous prime is 11780401757. The next prime is 11780401771. The reversal of 11780401767 is 76710408711.

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 11780401767 - 2⁷ = 11780401639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11780401727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1963400292 + ... + 1963400297.

It is an arithmetic number, because the mean of its divisors is an integer number (3926800590).

Almost surely, 2^11780401767 is an apocalyptic number.

11780401767 is a deficient number, since it is larger than the sum of its proper divisors (3926800593).

11780401767 is an equidigital number, since it uses as much as digits as its factorization.

11780401767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3926800592.

The product of its (nonzero) digits is 65856, while the sum is 42.

The spelling of 11780401767 in words is "eleven billion, seven hundred eighty million, four hundred one thousand, seven hundred sixty-seven".