40215678258 has 32 divisors (see below), whose sum is σ = 92253423744. Its totient is φ = 11448709632.

The previous prime is 40215678257. The next prime is 40215678271. The reversal of 40215678258 is 85287651204.

It is a super-3 number, since 3×40215678258³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (40215678253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1716735 + ... + 1740002.

It is an arithmetic number, because the mean of its divisors is an integer number (2882919492).

Almost surely, 2^40215678258 is an apocalyptic number.

40215678258 is an abundant number, since it is smaller than the sum of its proper divisors (52037745486).

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

40215678258 is a wasteful number, since it uses less digits than its factorization.

40215678258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3457026.

The product of its (nonzero) digits is 1075200, while the sum is 48.

The spelling of 40215678258 in words is "forty billion, two hundred fifteen million, six hundred seventy-eight thousand, two hundred fifty-eight".