1531384216680 has 64 divisors (see below), whose sum is σ = 4619534774400. Its totient is φ = 406112935680.

The previous prime is 1531384216631. The next prime is 1531384216693. The reversal of 1531384216680 is 866124831351.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35231140 + ... + 35274579.

It is an arithmetic number, because the mean of its divisors is an integer number (72180230850).

Almost surely, 2^{1531384216680} is an apocalyptic number.

1531384216680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1531384216680 is an abundant number, since it is smaller than the sum of its proper divisors (3088150557720).

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

1531384216680 is a wasteful number, since it uses less digits than its factorization.

1531384216680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70505914 (or 70505910 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 1531384216680 in words is "one trillion, five hundred thirty-one billion, three hundred eighty-four million, two hundred sixteen thousand, six hundred eighty".