4000878076020 has 72 divisors (see below), whose sum is σ = 13031431457184. Its totient is φ = 914486416704.

The previous prime is 4000878075923. The next prime is 4000878076021. The reversal of 4000878076020 is 206708780004.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000878076021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 680418502 + ... + 680424381.

It is an arithmetic number, because the mean of its divisors is an integer number (180992103572).

Almost surely, 2^{4000878076020} is an apocalyptic number.

It is an amenable number.

4000878076020 is an abundant number, since it is smaller than the sum of its proper divisors (9030553381164).

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

4000878076020 is a wasteful number, since it uses less digits than its factorization.

4000878076020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360842909 (or 1360842900 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The spelling of 4000878076020 in words is "four trillion, eight hundred seventy-eight million, seventy-six thousand, twenty".