1471781587872 has 48 divisors (see below), whose sum is σ = 3864273763392. Its totient is φ = 490486295040.

The previous prime is 1471781587867. The next prime is 1471781587907. The reversal of 1471781587872 is 2787851871741.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1471781587872² (a number of 25 digits) contains 22 as substring.

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, 1240029 + ... + 2116892.

It is an arithmetic number, because the mean of its divisors is an integer number (80505703404).

Almost surely, 2^{1471781587872} is an apocalyptic number.

1471781587872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1471781587872 is an abundant number, since it is smaller than the sum of its proper divisors (2392492175520).

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

1471781587872 is a wasteful number, since it uses less digits than its factorization.

1471781587872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361501 (or 3361493 counting only the distinct ones).

The product of its digits is 49172480, while the sum is 66.

The spelling of 1471781587872 in words is "one trillion, four hundred seventy-one billion, seven hundred eighty-one million, five hundred eighty-seven thousand, eight hundred seventy-two".