40634779020 has 288 divisors, whose sum is σ = 132333680640. Its totient is φ = 9283507200.

The previous prime is 40634778997. The next prime is 40634779069. The reversal of 40634779020 is 2097743604.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 30759960 + ... + 30761280.

Almost surely, 2^40634779020 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 40634779020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66166840320).

40634779020 is an abundant number, since it is smaller than the sum of its proper divisors (91698901620).

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

40634779020 is a wasteful number, since it uses less digits than its factorization.

40634779020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597 (or 1584 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 42.

The spelling of 40634779020 in words is "forty billion, six hundred thirty-four million, seven hundred seventy-nine thousand, twenty".