40781529852 has 48 divisors (see below), whose sum is σ = 114474474240. Its totient is φ = 11038609152.

The previous prime is 40781529791. The next prime is 40781529869. The reversal of 40781529852 is 25892518704.

It is a junction number, because it is equal to n+sod(n) for n = 40781529795 and 40781529804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12774573 + ... + 12777764.

It is an arithmetic number, because the mean of its divisors is an integer number (2384884880).

Almost surely, 2^40781529852 is an apocalyptic number.

40781529852 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

40781529852 is an abundant number, since it is smaller than the sum of its proper divisors (73692944388).

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

40781529852 is a wasteful number, since it uses less digits than its factorization.

40781529852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25552370 (or 25552368 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 51.

The spelling of 40781529852 in words is "forty billion, seven hundred eighty-one million, five hundred twenty-nine thousand, eight hundred fifty-two".