78377600386 has 8 divisors (see below), whose sum is σ = 118644991740. Its totient is φ = 38829269808.

The previous prime is 78377600369. The next prime is 78377600417. The reversal of 78377600386 is 68300677387.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 64424084761 + 13953515625 = 253819^2 + 118125^2 .

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

It is a super-2 number, since 2×78377600386² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179764921 + ... + 179765356.

Almost surely, 2^78377600386 is an apocalyptic number.

78377600386 is a deficient number, since it is larger than the sum of its proper divisors (40267391354).

78377600386 is a wasteful number, since it uses less digits than its factorization.

78377600386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359530388.

The product of its (nonzero) digits is 7112448, while the sum is 55.

The spelling of 78377600386 in words is "seventy-eight billion, three hundred seventy-seven million, six hundred thousand, three hundred eighty-six".