40861389216 has 24 divisors (see below), whose sum is σ = 107261146944. Its totient is φ = 13620463040.

The previous prime is 40861389211. The next prime is 40861389223. The reversal of 40861389216 is 61298316804.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×40861389216² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (40861389211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212819640 + ... + 212819831.

It is an arithmetic number, because the mean of its divisors is an integer number (4469214456).

Almost surely, 2^40861389216 is an apocalyptic number.

It is an amenable number.

40861389216 is an abundant number, since it is smaller than the sum of its proper divisors (66399757728).

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

40861389216 is a wasteful number, since it uses less digits than its factorization.

40861389216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425639484 (or 425639476 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The spelling of 40861389216 in words is "forty billion, eight hundred sixty-one million, three hundred eighty-nine thousand, two hundred sixteen".