40243618155578 has 32 divisors (see below), whose sum is σ = 63328093557120. Its totient is φ = 19153847160000.

The previous prime is 40243618155541. The next prime is 40243618155581. The reversal of 40243618155578 is 87555181634204.

It is a super-2 number, since 2×40243618155578² (a number of 28 digits) contains 22 as substring.

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, 211656653 + ... + 211846703.

It is an arithmetic number, because the mean of its divisors is an integer number (1979002923660).

Almost surely, 2^{40243618155578} is an apocalyptic number.

40243618155578 is a deficient number, since it is larger than the sum of its proper divisors (23084475401542).

40243618155578 is a wasteful number, since it uses less digits than its factorization.

40243618155578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241574.

The product of its (nonzero) digits is 32256000, while the sum is 59.

The spelling of 40243618155578 in words is "forty trillion, two hundred forty-three billion, six hundred eighteen million, one hundred fifty-five thousand, five hundred seventy-eight".