1531632443140 has 12 divisors (see below), whose sum is σ = 3216428130636. Its totient is φ = 612652977248.

The previous prime is 1531632443123. The next prime is 1531632443191. The reversal of 1531632443140 is 413442361351.

It can be written as a sum of positive squares in 2 ways, for example, as 1030614796864 + 501017646276 = 1015192^2 + 707826^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1531632443140.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38290811059 + ... + 38290811098.

It is an arithmetic number, because the mean of its divisors is an integer number (268035677553).

Almost surely, 2^{1531632443140} is an apocalyptic number.

1531632443140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1531632443140 is an abundant number, since it is smaller than the sum of its proper divisors (1684795687496).

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

1531632443140 is a wasteful number, since it uses less digits than its factorization.

1531632443140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76581622166 (or 76581622164 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 1531632443140 in words is "one trillion, five hundred thirty-one billion, six hundred thirty-two million, four hundred forty-three thousand, one hundred forty".