72776077252 has 6 divisors (see below), whose sum is σ = 127358135198. Its totient is φ = 36388038624.

The previous prime is 72776077247. The next prime is 72776077273. The reversal of 72776077252 is 25277067727.

It can be written as a sum of positive squares in only one way, i.e., 71725409856 + 1050667396 = 267816^2 + 32414^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72776077252.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9097009653 + ... + 9097009660.

Almost surely, 2^72776077252 is an apocalyptic number.

It is an amenable number.

72776077252 is a deficient number, since it is larger than the sum of its proper divisors (54582057946).

72776077252 is a wasteful number, since it uses less digits than its factorization.

72776077252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18194019317 (or 18194019315 counting only the distinct ones).

The product of its (nonzero) digits is 4033680, while the sum is 52.

The spelling of 72776077252 in words is "seventy-two billion, seven hundred seventy-six million, seventy-seven thousand, two hundred fifty-two".