80770372640 has 48 divisors (see below), whose sum is σ = 190836995328. Its totient is φ = 32305272576.

The previous prime is 80770372607. The next prime is 80770372643. The reversal of 80770372640 is 4627307708.

It is a junction number, because it is equal to n+sod(n) for n = 80770372591 and 80770372600.

It is not an unprimeable number, because it can be changed into a prime (80770372643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3509009 + ... + 3531951.

It is an arithmetic number, because the mean of its divisors is an integer number (3975770736).

Almost surely, 2^80770372640 is an apocalyptic number.

80770372640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80770372640 is an abundant number, since it is smaller than the sum of its proper divisors (110066622688).

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

80770372640 is a wasteful number, since it uses less digits than its factorization.

80770372640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44961 (or 44953 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 44.

The spelling of 80770372640 in words is "eighty billion, seven hundred seventy million, three hundred seventy-two thousand, six hundred forty".