40820027820 has 192 divisors, whose sum is σ = 134723990016. Its totient is φ = 9104209920.

The previous prime is 40820027803. The next prime is 40820027851. The reversal of 40820027820 is 2872002804.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2626312 + ... + 2641808.

It is an arithmetic number, because the mean of its divisors is an integer number (701687448).

Almost surely, 2^40820027820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40820027820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67361995008).

40820027820 is an abundant number, since it is smaller than the sum of its proper divisors (93903962196).

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

40820027820 is a wasteful number, since it uses less digits than its factorization.

40820027820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15840 (or 15838 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The spelling of 40820027820 in words is "forty billion, eight hundred twenty million, twenty-seven thousand, eight hundred twenty".