78220458118651 has 8 divisors (see below), whose sum is σ = 78390631969760. Its totient is φ = 78050468740608.

The previous prime is 78220458118639. The next prime is 78220458118661. The reversal of 78220458118651 is 15681185402287.

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 78220458118651 - 2⁵ = 78220458118619 is a prime.

It is a super-2 number, since 2×78220458118651² (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 (78220458118661) 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, 45269286 + ... + 46965403.

It is an arithmetic number, because the mean of its divisors is an integer number (9798828996220).

Almost surely, 2^{78220458118651} is an apocalyptic number.

78220458118651 is a deficient number, since it is larger than the sum of its proper divisors (170173851109).

78220458118651 is an equidigital number, since it uses as much as digits as its factorization.

78220458118651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92236533.

The product of its (nonzero) digits is 8601600, while the sum is 58.

The spelling of 78220458118651 in words is "seventy-eight trillion, two hundred twenty billion, four hundred fifty-eight million, one hundred eighteen thousand, six hundred fifty-one".