1361005913499 has 16 divisors (see below), whose sum is σ = 1842139453440. Its totient is φ = 893610416160.

The previous prime is 1361005913497. The next prime is 1361005913507. The reversal of 1361005913499 is 9943195001631.

It is not a de Polignac number, because 1361005913499 - 2¹ = 1361005913497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1361005913497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280582 + ... + 1673540.

It is an arithmetic number, because the mean of its divisors is an integer number (115133715840).

Almost surely, 2^{1361005913499} is an apocalyptic number.

1361005913499 is a deficient number, since it is larger than the sum of its proper divisors (481133539941).

1361005913499 is a wasteful number, since it uses less digits than its factorization.

1361005913499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397890.

The product of its (nonzero) digits is 787320, while the sum is 51.

The spelling of 1361005913499 in words is "one trillion, three hundred sixty-one billion, five million, nine hundred thirteen thousand, four hundred ninety-nine".