1138451556136 has 8 divisors (see below), whose sum is σ = 2134596667770. Its totient is φ = 569225778064.

The previous prime is 1138451556113. The next prime is 1138451556139. The reversal of 1138451556136 is 6316551548311.

It can be written as a sum of positive squares in only one way, i.e., 1135950956100 + 2500600036 = 1065810^2 + 50006^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1138451556136.

It is not an unprimeable number, because it can be changed into a prime (1138451556139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71153222251 + ... + 71153222266.

Almost surely, 2^{1138451556136} is an apocalyptic number.

It is an amenable number.

1138451556136 is a deficient number, since it is larger than the sum of its proper divisors (996145111634).

1138451556136 is a wasteful number, since it uses less digits than its factorization.

1138451556136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142306444523 (or 142306444519 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 49.

The spelling of 1138451556136 in words is "one trillion, one hundred thirty-eight billion, four hundred fifty-one million, five hundred fifty-six thousand, one hundred thirty-six".