1361504019402 has 12 divisors (see below), whose sum is σ = 2949925375410. Its totient is φ = 453834673128.

The previous prime is 1361504019401. The next prime is 1361504019431. The reversal of 1361504019402 is 2049104051631.

It is a happy number.

1361504019402 is a `hidden beast` number, since 1 + 3 + 61 + 504 + 0 + 1 + 94 + 0 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1008536139081 + 352967880321 = 1004259^2 + 594111^2 .

It is not an unprimeable number, because it can be changed into a prime (1361504019401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37819556077 + ... + 37819556112.

Almost surely, 2^{1361504019402} is an apocalyptic number.

1361504019402 is an abundant number, since it is smaller than the sum of its proper divisors (1588421356008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1361504019402 is a wasteful number, since it uses less digits than its factorization.

1361504019402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75639112197 (or 75639112194 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 1361504019402 in words is "one trillion, three hundred sixty-one billion, five hundred four million, nineteen thousand, four hundred two".