78134088450011 has 16 divisors (see below), whose sum is σ = 85313294057088. Its totient is φ = 70967570457600.

The previous prime is 78134088449987. The next prime is 78134088450071. The reversal of 78134088450011 is 11005488043187.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 78134088450011 - 2¹⁸ = 78134088187867 is a prime.

It is a super-2 number, since 2×78134088450011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78134088450071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 922100516 + ... + 922185246.

It is an arithmetic number, because the mean of its divisors is an integer number (5332080878568).

Almost surely, 2^{78134088450011} is an apocalyptic number.

78134088450011 is a deficient number, since it is larger than the sum of its proper divisors (7179205607077).

78134088450011 is a wasteful number, since it uses less digits than its factorization.

78134088450011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158602.

The product of its (nonzero) digits is 860160, while the sum is 50.

The spelling of 78134088450011 in words is "seventy-eight trillion, one hundred thirty-four billion, eighty-eight million, four hundred fifty thousand, eleven".