40640450558 has 8 divisors (see below), whose sum is σ = 64169132520. Its totient is φ = 19250739720.

The previous prime is 40640450519. The next prime is 40640450581. The reversal of 40640450558 is 85505404604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×40640450558³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534742733 + ... + 534742808.

It is an arithmetic number, because the mean of its divisors is an integer number (8021141565).

Almost surely, 2^40640450558 is an apocalyptic number.

40640450558 is a deficient number, since it is larger than the sum of its proper divisors (23528681962).

40640450558 is a wasteful number, since it uses less digits than its factorization.

40640450558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069485562.

The product of its (nonzero) digits is 384000, while the sum is 41.

The spelling of 40640450558 in words is "forty billion, six hundred forty million, four hundred fifty thousand, five hundred fifty-eight".