1540501423012 has 6 divisors (see below), whose sum is σ = 2695877490278. Its totient is φ = 770250711504.

The previous prime is 1540501422989. The next prime is 1540501423033. The reversal of 1540501423012 is 2103241050451.

It can be written as a sum of positive squares in only one way, i.e., 1084584776356 + 455916646656 = 1041434^2 + 675216^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192562677873 + ... + 192562677880.

Almost surely, 2^{1540501423012} is an apocalyptic number.

It is an amenable number.

1540501423012 is a deficient number, since it is larger than the sum of its proper divisors (1155376067266).

1540501423012 is a wasteful number, since it uses less digits than its factorization.

1540501423012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385125355757 (or 385125355755 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 1540501423012 its reverse (2103241050451), we get a palindrome (3643742473463).

The spelling of 1540501423012 in words is "one trillion, five hundred forty billion, five hundred one million, four hundred twenty-three thousand, twelve".