40534861578 has 32 divisors (see below), whose sum is σ = 85857117696. Its totient is φ = 12731257968.

The previous prime is 40534861537. The next prime is 40534861607. The reversal of 40534861578 is 87516843504.

It is a self number, because there is not a number n which added to its sum of digits gives 40534861578.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2182776 + ... + 2201267.

It is an arithmetic number, because the mean of its divisors is an integer number (2683034928).

Almost surely, 2^40534861578 is an apocalyptic number.

40534861578 is an abundant number, since it is smaller than the sum of its proper divisors (45322256118).

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

40534861578 is a wasteful number, since it uses less digits than its factorization.

40534861578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4384138.

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 40534861578 in words is "forty billion, five hundred thirty-four million, eight hundred sixty-one thousand, five hundred seventy-eight".