40512055122 has 256 divisors, whose sum is σ = 122947891200. Its totient is φ = 9561646080.

The previous prime is 40512055079. The next prime is 40512055127. The reversal of 40512055122 is 22155021504.

40512055122 is a `hidden beast` number, since 40 + 51 + 2 + 0 + 551 + 22 = 666.

It is a super-2 number, since 2×40512055122² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40512055127) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2040013 + ... + 2059775.

It is an arithmetic number, because the mean of its divisors is an integer number (480265200).

Almost surely, 2^40512055122 is an apocalyptic number.

40512055122 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 40512055122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61473945600).

40512055122 is an abundant number, since it is smaller than the sum of its proper divisors (82435836078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40512055122 is a wasteful number, since it uses less digits than its factorization.

40512055122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19838 (or 19832 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 40512055122 its reverse (22155021504), we get a palindrome (62667076626).

The spelling of 40512055122 in words is "forty billion, five hundred twelve million, fifty-five thousand, one hundred twenty-two".