11977527155042 has 4 divisors (see below), whose sum is σ = 17966290732566. Its totient is φ = 5988763577520.

The previous prime is 11977527155039. The next prime is 11977527155089. The reversal of 11977527155042 is 24055172577911.

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

It can be written as a sum of positive squares in only one way, i.e., 9850803682801 + 2126723472241 = 3138599^2 + 1458329^2 .

It is a super-2 number, since 2×11977527155042² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2994381788759 + ... + 2994381788762.

Almost surely, 2^{11977527155042} is an apocalyptic number.

11977527155042 is a deficient number, since it is larger than the sum of its proper divisors (5988763577524).

11977527155042 is an equidigital number, since it uses as much as digits as its factorization.

11977527155042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5988763577523.

The product of its (nonzero) digits is 6174000, while the sum is 56.

The spelling of 11977527155042 in words is "eleven trillion, nine hundred seventy-seven billion, five hundred twenty-seven million, one hundred fifty-five thousand, forty-two".