272220767505 has 24 divisors (see below), whose sum is σ = 476713764072. Its totient is φ = 143687660544.

The previous prime is 272220767461. The next prime is 272220767531. The reversal of 272220767505 is 505767022272.

272220767505 is a `hidden beast` number, since 2 + 72 + 2 + 2 + 0 + 76 + 7 + 505 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 622402704 + 271598364801 = 24948^2 + 521151^2 .

It is not a de Polignac number, because 272220767505 - 2⁸ = 272220767249 is a prime.

It is a super-2 number, since 2×272220767505² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31177854 + ... + 31186583.

It is an arithmetic number, because the mean of its divisors is an integer number (19863073503).

Almost surely, 2^272220767505 is an apocalyptic number.

It is an amenable number.

272220767505 is a deficient number, since it is larger than the sum of its proper divisors (204492996567).

272220767505 is a wasteful number, since it uses less digits than its factorization.

272220767505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62364545 (or 62364542 counting only the distinct ones).

The product of its (nonzero) digits is 823200, while the sum is 45.

Adding to 272220767505 its reverse (505767022272), we get a palindrome (777987789777).

The spelling of 272220767505 in words is "two hundred seventy-two billion, two hundred twenty million, seven hundred sixty-seven thousand, five hundred five".