78275418837 has 64 divisors (see below), whose sum is σ = 133732988928. Its totient is φ = 39540096000.

The previous prime is 78275418833. The next prime is 78275418883. The reversal of 78275418837 is 73881457287.

It is not a de Polignac number, because 78275418837 - 2² = 78275418833 is a prime.

It is a super-2 number, since 2×78275418837² (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 (78275418833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2894137 + ... + 2921057.

It is an arithmetic number, because the mean of its divisors is an integer number (2089577952).

Almost surely, 2^78275418837 is an apocalyptic number.

78275418837 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

78275418837 is a deficient number, since it is larger than the sum of its proper divisors (55457570091).

78275418837 is a wasteful number, since it uses less digits than its factorization.

78275418837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27290.

The product of its digits is 21073920, while the sum is 60.

The spelling of 78275418837 in words is "seventy-eight billion, two hundred seventy-five million, four hundred eighteen thousand, eight hundred thirty-seven".