40155320000 has 140 divisors (see below), whose sum is σ = 99771013056. Its totient is φ = 16030080000.

The previous prime is 40155319973. The next prime is 40155320011. The reversal of 40155320000 is 2355104.

It is a super-2 number, since 2×40155320000² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 39639494 + ... + 39640506.

Almost surely, 2^40155320000 is an apocalyptic number.

40155320000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40155320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49885506528).

40155320000 is an abundant number, since it is smaller than the sum of its proper divisors (59615693056).

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

40155320000 is an equidigital number, since it uses as much as digits as its factorization.

40155320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036 (or 2011 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

Adding to 40155320000 its reverse (2355104), we get a palindrome (40157675104).

The spelling of 40155320000 in words is "forty billion, one hundred fifty-five million, three hundred twenty thousand".