1540323340402 has 48 divisors (see below), whose sum is σ = 2932349696640. Its totient is φ = 593939047680.

The previous prime is 1540323340379. The next prime is 1540323340411. The reversal of 1540323340402 is 2040433230451.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4522702 + ... + 4851337.

It is an arithmetic number, because the mean of its divisors is an integer number (61090618680).

Almost surely, 2^{1540323340402} is an apocalyptic number.

1540323340402 is a deficient number, since it is larger than the sum of its proper divisors (1392026356238).

1540323340402 is a wasteful number, since it uses less digits than its factorization.

1540323340402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9374167 (or 9374156 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 1540323340402 its reverse (2040433230451), we get a palindrome (3580756570853).

The spelling of 1540323340402 in words is "one trillion, five hundred forty billion, three hundred twenty-three million, three hundred forty thousand, four hundred two".