40508185536 has 1176 divisors, whose sum is σ = 159510496320. Its totient is φ = 10095611904.

The previous prime is 40508185457. The next prime is 40508185537. The reversal of 40508185536 is 63558180504.

40508185536 is a `hidden beast` number, since 40 + 50 + 8 + 1 + 8 + 553 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (1176).

It is a junction number, because it is equal to n+sod(n) for n = 40508185491 and 40508185500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40508185537) by changing a digit.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 861876265 + ... + 861876311.

Almost surely, 2^40508185536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40508185536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79755248160).

40508185536 is an abundant number, since it is smaller than the sum of its proper divisors (119002310784).

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

40508185536 is a wasteful number, since it uses less digits than its factorization.

40508185536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The spelling of 40508185536 in words is "forty billion, five hundred eight million, one hundred eighty-five thousand, five hundred thirty-six".