1531537940804 has 24 divisors (see below), whose sum is σ = 2682851935680. Its totient is φ = 765009062496.

The previous prime is 1531537940773. The next prime is 1531537940833. The reversal of 1531537940804 is 4080497351351.

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 7 ways as a sum of consecutive naturals, for example, 27957689 + ... + 28012415.

It is an arithmetic number, because the mean of its divisors is an integer number (111785497320).

Almost surely, 2^{1531537940804} is an apocalyptic number.

It is an amenable number.

1531537940804 is a deficient number, since it is larger than the sum of its proper divisors (1151313994876).

1531537940804 is a wasteful number, since it uses less digits than its factorization.

1531537940804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61547 (or 61545 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 1531537940804 in words is "one trillion, five hundred thirty-one billion, five hundred thirty-seven million, nine hundred forty thousand, eight hundred four".