40208880642 has 16 divisors (see below), whose sum is σ = 91906012992. Its totient is φ = 11488251600.

The previous prime is 40208880637. The next prime is 40208880643. The reversal of 40208880642 is 24608880204.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 957354301 = 40208880642 / (4 + 0 + 2 + 0 + 8 + 8 + 8 + 0 + 6 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 40208880594 and 40208880603.

It is not an unprimeable number, because it can be changed into a prime (40208880643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478677109 + ... + 478677192.

It is an arithmetic number, because the mean of its divisors is an integer number (5744125812).

Almost surely, 2^40208880642 is an apocalyptic number.

40208880642 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

40208880642 is an abundant number, since it is smaller than the sum of its proper divisors (51697132350).

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

40208880642 is a wasteful number, since it uses less digits than its factorization.

40208880642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957354313.

The product of its (nonzero) digits is 196608, while the sum is 42.

The spelling of 40208880642 in words is "forty billion, two hundred eight million, eight hundred eighty thousand, six hundred forty-two".