11781251158074 has 16 divisors (see below), whose sum is σ = 23680906852800. Its totient is φ = 3907349629920.

The previous prime is 11781251158073. The next prime is 11781251158081. The reversal of 11781251158074 is 47085115218711.

It is a happy number.

It is a super-2 number, since 2×11781251158074² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11781251158073) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 4933521067 + ... + 4933523454.

It is an arithmetic number, because the mean of its divisors is an integer number (1480056678300).

Almost surely, 2^{11781251158074} is an apocalyptic number.

11781251158074 is an abundant number, since it is smaller than the sum of its proper divisors (11899655694726).

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

11781251158074 is a wasteful number, since it uses less digits than its factorization.

11781251158074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9867044725.

The product of its (nonzero) digits is 627200, while the sum is 51.

The spelling of 11781251158074 in words is "eleven trillion, seven hundred eighty-one billion, two hundred fifty-one million, one hundred fifty-eight thousand, seventy-four".