1236056266536 has 128 divisors (see below), whose sum is σ = 3805932318720. Its totient is φ = 325762953984.

The previous prime is 1236056266447. The next prime is 1236056266537. The reversal of 1236056266536 is 6356626506321.

It is not an unprimeable number, because it can be changed into a prime (1236056266537) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2908971 + ... + 3306693.

It is an arithmetic number, because the mean of its divisors is an integer number (29733846240).

Almost surely, 2^{1236056266536} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1236056266536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1902966159360).

1236056266536 is an abundant number, since it is smaller than the sum of its proper divisors (2569876052184).

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

1236056266536 is a wasteful number, since it uses less digits than its factorization.

1236056266536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399175 (or 399171 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 51.

The spelling of 1236056266536 in words is "one trillion, two hundred thirty-six billion, fifty-six million, two hundred sixty-six thousand, five hundred thirty-six".