72219001277 has 2 divisors, whose sum is σ = 72219001278. Its totient is φ = 72219001276.

The previous prime is 72219001241. The next prime is 72219001289. The reversal of 72219001277 is 77210091227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43235300761 + 28983700516 = 207931^2 + 170246^2 .

It is a cyclic number.

It is not a de Polignac number, because 72219001277 - 2⁸ = 72219001021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72219001277.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72219001237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36109500638 + 36109500639.

It is an arithmetic number, because the mean of its divisors is an integer number (36109500639).

Almost surely, 2^72219001277 is an apocalyptic number.

It is an amenable number.

72219001277 is a deficient number, since it is larger than the sum of its proper divisors (1).

72219001277 is an equidigital number, since it uses as much as digits as its factorization.

72219001277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24696, while the sum is 38.

The spelling of 72219001277 in words is "seventy-two billion, two hundred nineteen million, one thousand, two hundred seventy-seven".