1138618705651 has 8 divisors (see below), whose sum is σ = 1301286023424. Its totient is φ = 975953263560.

The previous prime is 1138618705649. The next prime is 1138618705673. The reversal of 1138618705651 is 1565078168311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1138618705651 - 2¹ = 1138618705649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1138618702651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1253856 + ... + 1961986.

It is an arithmetic number, because the mean of its divisors is an integer number (162660752928).

Almost surely, 2^{1138618705651} is an apocalyptic number.

1138618705651 is a deficient number, since it is larger than the sum of its proper divisors (162667317773).

1138618705651 is an equidigital number, since it uses as much as digits as its factorization.

1138618705651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937841.

The product of its (nonzero) digits is 1209600, while the sum is 52.

The spelling of 1138618705651 in words is "one trillion, one hundred thirty-eight billion, six hundred eighteen million, seven hundred five thousand, six hundred fifty-one".