1540205212130 has 32 divisors (see below), whose sum is σ = 2985727929408. Its totient is φ = 568672228800.

The previous prime is 1540205212129. The next prime is 1540205212141. The reversal of 1540205212130 is 312125020451.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 1540205212130.

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, 4079465 + ... + 4440995.

It is an arithmetic number, because the mean of its divisors is an integer number (93303997794).

Almost surely, 2^{1540205212130} is an apocalyptic number.

1540205212130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1540205212130 is a deficient number, since it is larger than the sum of its proper divisors (1445522717278).

1540205212130 is a wasteful number, since it uses less digits than its factorization.

1540205212130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394322.

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 1540205212130 in words is "one trillion, five hundred forty billion, two hundred five million, two hundred twelve thousand, one hundred thirty".