1206381322037 has 4 divisors (see below), whose sum is σ = 1213046412396. Its totient is φ = 1199716231680.

The previous prime is 1206381322033. The next prime is 1206381322079. The reversal of 1206381322037 is 7302231836021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 275592450961 + 930788871076 = 524969^2 + 964774^2 .

It is a cyclic number.

It is not a de Polignac number, because 1206381322037 - 2² = 1206381322033 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206381322033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3332544908 + ... + 3332545269.

It is an arithmetic number, because the mean of its divisors is an integer number (303261603099).

Almost surely, 2^{1206381322037} is an apocalyptic number.

It is an amenable number.

1206381322037 is a deficient number, since it is larger than the sum of its proper divisors (6665090359).

1206381322037 is an equidigital number, since it uses as much as digits as its factorization.

1206381322037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6665090358.

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 1206381322037 in words is "one trillion, two hundred six billion, three hundred eighty-one million, three hundred twenty-two thousand, thirty-seven".