78379150947 has 64 divisors (see below), whose sum is σ = 117852433920. Its totient is φ = 46085953536.

The previous prime is 78379150943. The next prime is 78379150951. The reversal of 78379150947 is 74905197387.

It is an interprime number because it is at equal distance from previous prime (78379150943) and next prime (78379150951).

It is not a de Polignac number, because 78379150947 - 2² = 78379150943 is a prime.

It is a super-2 number, since 2×78379150947² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78379150943) 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, 25554108 + ... + 25557174.

It is an arithmetic number, because the mean of its divisors is an integer number (1841444280).

Almost surely, 2^78379150947 is an apocalyptic number.

78379150947 is a deficient number, since it is larger than the sum of its proper divisors (39473282973).

78379150947 is a wasteful number, since it uses less digits than its factorization.

78379150947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3620.

The product of its (nonzero) digits is 13335840, while the sum is 60.

The spelling of 78379150947 in words is "seventy-eight billion, three hundred seventy-nine million, one hundred fifty thousand, nine hundred forty-seven".