401238461511 has 6 divisors (see below), whose sum is σ = 579566666640. Its totient is φ = 267492307668.

The previous prime is 401238461509. The next prime is 401238461567. The reversal of 401238461511 is 115164832104.

401238461511 is a `hidden beast` number, since 4 + 0 + 1 + 2 + 3 + 84 + 61 + 511 = 666.

It is not a de Polignac number, because 401238461511 - 2¹ = 401238461509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401238461011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22291025631 + ... + 22291025648.

It is an arithmetic number, because the mean of its divisors is an integer number (96594444440).

Almost surely, 2^401238461511 is an apocalyptic number.

401238461511 is a deficient number, since it is larger than the sum of its proper divisors (178328205129).

401238461511 is a wasteful number, since it uses less digits than its factorization.

401238461511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44582051285 (or 44582051282 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 401238461511 in words is "four hundred one billion, two hundred thirty-eight million, four hundred sixty-one thousand, five hundred eleven".