40830785840 has 40 divisors (see below), whose sum is σ = 102234008688. Its totient is φ = 15075982080.

The previous prime is 40830785839. The next prime is 40830785869. The reversal of 40830785840 is 4858703804.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19629146 + ... + 19631225.

Almost surely, 2^40830785840 is an apocalyptic number.

40830785840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40830785840 is an abundant number, since it is smaller than the sum of its proper divisors (61403222848).

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

40830785840 is a wasteful number, since it uses less digits than its factorization.

40830785840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39260397 (or 39260391 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 47.

The spelling of 40830785840 in words is "forty billion, eight hundred thirty million, seven hundred eighty-five thousand, eight hundred forty".