40015563870 has 64 divisors (see below), whose sum is σ = 99869552640. Its totient is φ = 10248873600.

The previous prime is 40015563869. The next prime is 40015563901. The reversal of 40015563870 is 7836551004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45765 + ... + 286575.

It is an arithmetic number, because the mean of its divisors is an integer number (1560461760).

Almost surely, 2^40015563870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40015563870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49934776320).

40015563870 is an abundant number, since it is smaller than the sum of its proper divisors (59853988770).

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

40015563870 is a wasteful number, since it uses less digits than its factorization.

40015563870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241041.

The product of its (nonzero) digits is 100800, while the sum is 39.

The spelling of 40015563870 in words is "forty billion, fifteen million, five hundred sixty-three thousand, eight hundred seventy".