402238861011 has 32 divisors (see below), whose sum is σ = 675524864000. Its totient is φ = 234503623584.

The previous prime is 402238861009. The next prime is 402238861039. The reversal of 402238861011 is 110168832204.

402238861011 is a `hidden beast` number, since 4 + 0 + 2 + 2 + 38 + 8 + 610 + 1 + 1 = 666.

It is not a de Polignac number, because 402238861011 - 2¹ = 402238861009 is a prime.

It is a super-2 number, since 2×402238861011² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402238861111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30150691 + ... + 30164028.

It is an arithmetic number, because the mean of its divisors is an integer number (21110152000).

Almost surely, 2^402238861011 is an apocalyptic number.

402238861011 is a deficient number, since it is larger than the sum of its proper divisors (273286002989).

402238861011 is a wasteful number, since it uses less digits than its factorization.

402238861011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60314760 (or 60314754 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 402238861011 in words is "four hundred two billion, two hundred thirty-eight million, eight hundred sixty-one thousand, eleven".