78823683701380 has 48 divisors (see below), whose sum is σ = 167825933619120. Its totient is φ = 31092250042368.

The previous prime is 78823683701327. The next prime is 78823683701393. The reversal of 78823683701380 is 8310738632887.

It can be written as a sum of positive squares in 8 ways, for example, as 15287990520196 + 63535693181184 = 3909986^2 + 7970928^2 .

It is a super-2 number, since 2×78823683701380² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3942306 + ... + 13160134.

It is an arithmetic number, because the mean of its divisors is an integer number (3496373617065).

Almost surely, 2^{78823683701380} is an apocalyptic number.

It is an amenable number.

78823683701380 is an abundant number, since it is smaller than the sum of its proper divisors (89002249917740).

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

78823683701380 is a wasteful number, since it uses less digits than its factorization.

78823683701380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9223768 (or 9223766 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 64.

The spelling of 78823683701380 in words is "seventy-eight trillion, eight hundred twenty-three billion, six hundred eighty-three million, seven hundred one thousand, three hundred eighty".