326620251049 has 9 divisors (see below), whose sum is σ = 327750582103. Its totient is φ = 325493810752.

The previous prime is 326620251011. The next prime is 326620251053. The reversal of 326620251049 is 940152026623.

The square root of 326620251049 is 571507.

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

It can be written as a sum of positive squares in only one way, i.e., 132696275625 + 193923975424 = 364275^2 + 440368^2 .

It is not a de Polignac number, because 326620251049 - 2¹¹ = 326620249001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (326620251079) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 201741162 + ... + 201742780.

Almost surely, 2^326620251049 is an apocalyptic number.

326620251049 is the 571507-th square number.

326620251049 is the 285754-th centered octagonal number.

It is an amenable number.

326620251049 is a deficient number, since it is larger than the sum of its proper divisors (1130331054).

326620251049 is an frugal number, since it uses more digits than its factorization.

326620251049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3944 (or 1972 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 326620251049 in words is "three hundred twenty-six billion, six hundred twenty million, two hundred fifty-one thousand, forty-nine".