78400441627 has 8 divisors (see below), whose sum is σ = 82529474000. Its totient is φ = 74271678624.

The previous prime is 78400441621. The next prime is 78400441681. The reversal of 78400441627 is 72614400487.

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

It is a cyclic number.

It is not a de Polignac number, because 78400441627 - 2¹⁹ = 78399917339 is a prime.

It is a super-2 number, since 2×78400441627² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78400441621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 852073 + ... + 939589.

It is an arithmetic number, because the mean of its divisors is an integer number (10316184250).

Almost surely, 2^78400441627 is an apocalyptic number.

78400441627 is a deficient number, since it is larger than the sum of its proper divisors (4129032373).

78400441627 is a wasteful number, since it uses less digits than its factorization.

78400441627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134685.

The product of its (nonzero) digits is 301056, while the sum is 43.

The spelling of 78400441627 in words is "seventy-eight billion, four hundred million, four hundred forty-one thousand, six hundred twenty-seven".