78338745141 has 8 divisors (see below), whose sum is σ = 106999261824. Its totient is φ = 50952029280.

The previous prime is 78338745137. The next prime is 78338745179. The reversal of 78338745141 is 14154783387.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78338745141 - 2² = 78338745137 is a prime.

It is a super-2 number, since 2×78338745141² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78338745101) 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, 318450061 + ... + 318450306.

It is an arithmetic number, because the mean of its divisors is an integer number (13374907728).

Almost surely, 2^78338745141 is an apocalyptic number.

It is an amenable number.

78338745141 is a deficient number, since it is larger than the sum of its proper divisors (28660516683).

78338745141 is a wasteful number, since it uses less digits than its factorization.

78338745141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636900411.

The product of its digits is 2257920, while the sum is 51.

The spelling of 78338745141 in words is "seventy-eight billion, three hundred thirty-eight million, seven hundred forty-five thousand, one hundred forty-one".