78283954143684 has 27 divisors (see below), whose sum is σ = 197884573833037. Its totient is φ = 26094633685584.

The previous prime is 78283954143677. The next prime is 78283954143701. The reversal of 78283954143684 is 48634145938287.

The square root of 78283954143684 is 8847822.

It is a perfect power (a square), and thus also a powerful number.

78283954143684 is a `hidden beast` number, since 7 + 8 + 2 + 8 + 39 + 541 + 43 + 6 + 8 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 78105471552900 + 178482590784 = 8837730^2 + 422472^2 .

It is a super-2 number, since 2×78283954143684² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 52349614 + ... + 53824250.

Almost surely, 2^{78283954143684} is an apocalyptic number.

78283954143684 is the 8847822-nd square number.

It is an amenable number.

78283954143684 is an abundant number, since it is smaller than the sum of its proper divisors (119600619689353).

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

78283954143684 is an frugal number, since it uses more digits than its factorization.

78283954143684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2949284 (or 1474642 counting only the distinct ones).

The product of its digits is 1114767360, while the sum is 72.

The spelling of 78283954143684 in words is "seventy-eight trillion, two hundred eighty-three billion, nine hundred fifty-four million, one hundred forty-three thousand, six hundred eighty-four".