40511552538 has 16 divisors (see below), whose sum is σ = 81034762176. Its totient is φ = 13501908000.

The previous prime is 40511552489. The next prime is 40511552539. The reversal of 40511552538 is 83525511504.

It is a junction number, because it is equal to n+sod(n) for n = 40511552496 and 40511552505.

It is not an unprimeable number, because it can be changed into a prime (40511552539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 440206 + ... + 524217.

It is an arithmetic number, because the mean of its divisors is an integer number (5064672636).

Almost surely, 2^40511552538 is an apocalyptic number.

40511552538 is an abundant number, since it is smaller than the sum of its proper divisors (40523209638).

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

40511552538 is a wasteful number, since it uses less digits than its factorization.

40511552538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971429.

The product of its (nonzero) digits is 120000, while the sum is 39.

The spelling of 40511552538 in words is "forty billion, five hundred eleven million, five hundred fifty-two thousand, five hundred thirty-eight".