404015867039761 has 4 divisors (see below), whose sum is σ = 427781506277412. Its totient is φ = 380250227802112.

The previous prime is 404015867039699. The next prime is 404015867039791. The reversal of 404015867039761 is 167930768510404.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 174101269225536 + 229914597814225 = 13194744^2 + 15162935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404015867039761 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 404015867039761.

It is not an unprimeable number, because it can be changed into a prime (404015867039791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11882819618800 + ... + 11882819618833.

It is an arithmetic number, because the mean of its divisors is an integer number (106945376569353).

Almost surely, 2^{404015867039761} is an apocalyptic number.

It is an amenable number.

404015867039761 is a deficient number, since it is larger than the sum of its proper divisors (23765639237651).

404015867039761 is a wasteful number, since it uses less digits than its factorization.

404015867039761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23765639237650.

The product of its (nonzero) digits is 30481920, while the sum is 61.

The spelling of 404015867039761 in words is "four hundred four trillion, fifteen billion, eight hundred sixty-seven million, thirty-nine thousand, seven hundred sixty-one".