71440470780 has 48 divisors (see below), whose sum is σ = 228609507840. Its totient is φ = 16329250368.

The previous prime is 71440470733. The next prime is 71440470793. The reversal of 71440470780 is 8707404417.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85047760 + ... + 85048599.

It is an arithmetic number, because the mean of its divisors is an integer number (4762698080).

Almost surely, 2^71440470780 is an apocalyptic number.

71440470780 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

71440470780 is an abundant number, since it is smaller than the sum of its proper divisors (157169037060).

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

71440470780 is a wasteful number, since it uses less digits than its factorization.

71440470780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170096378 (or 170096376 counting only the distinct ones).

The product of its (nonzero) digits is 175616, while the sum is 42.

The spelling of 71440470780 in words is "seventy-one billion, four hundred forty million, four hundred seventy thousand, seven hundred eighty".