78246406158 has 128 divisors (see below), whose sum is σ = 178994810880. Its totient is φ = 22676060160.

The previous prime is 78246406153. The next prime is 78246406159. The reversal of 78246406158 is 85160464287.

It is a super-2 number, since 2×78246406158² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 78246406158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78246406151) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6194373 + ... + 6206991.

It is an arithmetic number, because the mean of its divisors is an integer number (1398396960).

Almost surely, 2^78246406158 is an apocalyptic number.

78246406158 is an abundant number, since it is smaller than the sum of its proper divisors (100748404722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78246406158 is a wasteful number, since it uses less digits than its factorization.

78246406158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12762.

The product of its (nonzero) digits is 2580480, while the sum is 51.

The spelling of 78246406158 in words is "seventy-eight billion, two hundred forty-six million, four hundred six thousand, one hundred fifty-eight".