400953921311 has 4 divisors (see below), whose sum is σ = 424539446112. Its totient is φ = 377368396512.

The previous prime is 400953921293. The next prime is 400953921337. The reversal of 400953921311 is 113129359004.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400953921311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400953921341) 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, 11792762375 + ... + 11792762408.

It is an arithmetic number, because the mean of its divisors is an integer number (106134861528).

Almost surely, 2^400953921311 is an apocalyptic number.

400953921311 is a deficient number, since it is larger than the sum of its proper divisors (23585524801).

400953921311 is a wasteful number, since it uses less digits than its factorization.

400953921311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23585524800.

The product of its (nonzero) digits is 29160, while the sum is 38.

The spelling of 400953921311 in words is "four hundred billion, nine hundred fifty-three million, nine hundred twenty-one thousand, three hundred eleven".