78191411073 has 32 divisors (see below), whose sum is σ = 114040949760. Its totient is φ = 47440250880.

The previous prime is 78191411069. The next prime is 78191411101. The reversal of 78191411073 is 37011419187.

It is not a de Polignac number, because 78191411073 - 2² = 78191411069 is a prime.

It is a super-2 number, since 2×78191411073² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78191411033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1999573 + ... + 2038301.

It is an arithmetic number, because the mean of its divisors is an integer number (3563779680).

Almost surely, 2^78191411073 is an apocalyptic number.

It is an amenable number.

78191411073 is a deficient number, since it is larger than the sum of its proper divisors (35849538687).

78191411073 is a wasteful number, since it uses less digits than its factorization.

78191411073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40057.

The product of its (nonzero) digits is 42336, while the sum is 42.

The spelling of 78191411073 in words is "seventy-eight billion, one hundred ninety-one million, four hundred eleven thousand, seventy-three".