1361375472020 has 12 divisors (see below), whose sum is σ = 2858888491284. Its totient is φ = 544550188800.

The previous prime is 1361375472019. The next prime is 1361375472077. The reversal of 1361375472020 is 202745731631.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 370323365764 + 991052106256 = 608542^2 + 995516^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34034386781 + ... + 34034386820.

It is an arithmetic number, because the mean of its divisors is an integer number (238240707607).

Almost surely, 2^{1361375472020} is an apocalyptic number.

1361375472020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1361375472020 is an abundant number, since it is smaller than the sum of its proper divisors (1497513019264).

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

1361375472020 is a wasteful number, since it uses less digits than its factorization.

1361375472020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68068773610 (or 68068773608 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 41.

The spelling of 1361375472020 in words is "one trillion, three hundred sixty-one billion, three hundred seventy-five million, four hundred seventy-two thousand, twenty".