1155138861614 has 4 divisors (see below), whose sum is σ = 1732708292424. Its totient is φ = 577569430806.

The previous prime is 1155138861599. The next prime is 1155138861623. The reversal of 1155138861614 is 4161688315511.

It is a happy number.

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

It is a super-2 number, since 2×1155138861614² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 288784715402 + ... + 288784715405.

It is an arithmetic number, because the mean of its divisors is an integer number (433177073106).

Almost surely, 2^{1155138861614} is an apocalyptic number.

1155138861614 is a deficient number, since it is larger than the sum of its proper divisors (577569430810).

1155138861614 is an equidigital number, since it uses as much as digits as its factorization.

1155138861614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577569430809.

The product of its digits is 691200, while the sum is 50.

The spelling of 1155138861614 in words is "one trillion, one hundred fifty-five billion, one hundred thirty-eight million, eight hundred sixty-one thousand, six hundred fourteen".