78227420358 has 16 divisors (see below), whose sum is σ = 156696664320. Its totient is φ = 26035502856.

The previous prime is 78227420321. The next prime is 78227420387. The reversal of 78227420358 is 85302472287.

It is a super-2 number, since 2×78227420358² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10071778 + ... + 10079541.

It is an arithmetic number, because the mean of its divisors is an integer number (9793541520).

Almost surely, 2^78227420358 is an apocalyptic number.

78227420358 is an abundant number, since it is smaller than the sum of its proper divisors (78469243962).

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

78227420358 is a wasteful number, since it uses less digits than its factorization.

78227420358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20151971.

The product of its (nonzero) digits is 1505280, while the sum is 48.

The spelling of 78227420358 in words is "seventy-eight billion, two hundred twenty-seven million, four hundred twenty thousand, three hundred fifty-eight".