40542541594 has 4 divisors (see below), whose sum is σ = 60813812394. Its totient is φ = 20271270796.

The previous prime is 40542541573. The next prime is 40542541621. The reversal of 40542541594 is 49514524504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21681090025 + 18861451569 = 147245^2 + 137337^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40542541594.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10135635397 + ... + 10135635400.

Almost surely, 2^40542541594 is an apocalyptic number.

40542541594 is a deficient number, since it is larger than the sum of its proper divisors (20271270800).

40542541594 is a wasteful number, since it uses less digits than its factorization.

40542541594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20271270799.

The product of its (nonzero) digits is 576000, while the sum is 43.

The spelling of 40542541594 in words is "forty billion, five hundred forty-two million, five hundred forty-one thousand, five hundred ninety-four".