101782391780 has 24 divisors (see below), whose sum is σ = 213760051008. Its totient is φ = 40709713248.

The previous prime is 101782391779. The next prime is 101782391819. The reversal of 101782391780 is 87193287101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63107 + ... + 455573.

It is an arithmetic number, because the mean of its divisors is an integer number (8906668792).

Almost surely, 2^101782391780 is an apocalyptic number.

101782391780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101782391780 is an abundant number, since it is smaller than the sum of its proper divisors (111977659228).

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

101782391780 is a wasteful number, since it uses less digits than its factorization.

101782391780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405443 (or 405441 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 47.

The spelling of 101782391780 in words is "one hundred one billion, seven hundred eighty-two million, three hundred ninety-one thousand, seven hundred eighty".