40561534860 has 192 divisors, whose sum is σ = 144610099200. Its totient is φ = 8248999680.

The previous prime is 40561534831. The next prime is 40561534877. The reversal of 40561534860 is 6843516504.

It is a super-2 number, since 2×40561534860² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 123741 + ... + 310539.

It is an arithmetic number, because the mean of its divisors is an integer number (753177600).

Almost surely, 2^40561534860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40561534860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72305049600).

40561534860 is an abundant number, since it is smaller than the sum of its proper divisors (104048564340).

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

40561534860 is a wasteful number, since it uses less digits than its factorization.

40561534860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186876 (or 186874 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 40561534860 in words is "forty billion, five hundred sixty-one million, five hundred thirty-four thousand, eight hundred sixty".