83776215412 has 6 divisors (see below), whose sum is σ = 146608376978. Its totient is φ = 41888107704.

The previous prime is 83776215401. The next prime is 83776215433. The reversal of 83776215412 is 21451267738.

It can be written as a sum of positive squares in only one way, i.e., 72272794896 + 11503420516 = 268836^2 + 107254^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10472026923 + ... + 10472026930.

Almost surely, 2^83776215412 is an apocalyptic number.

It is an amenable number.

83776215412 is a deficient number, since it is larger than the sum of its proper divisors (62832161566).

83776215412 is a wasteful number, since it uses less digits than its factorization.

83776215412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20944053857 (or 20944053855 counting only the distinct ones).

The product of its digits is 564480, while the sum is 46.

The spelling of 83776215412 in words is "eighty-three billion, seven hundred seventy-six million, two hundred fifteen thousand, four hundred twelve".