32551372355161 has 27 divisors (see below), whose sum is σ = 35885255771743. Its totient is φ = 29505035518640.

The previous prime is 32551372355119. The next prime is 32551372355209. The reversal of 32551372355161 is 16155327315523.

The square root of 32551372355161 is 5705381.

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., 26470314994761 + 6081057360400 = 5144931^2 + 2465980^2 .

It is not a de Polignac number, because 32551372355161 - 2²¹ = 32551370258009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32551372353161) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 31944427710 + ... + 31944428728.

Almost surely, 2^{32551372355161} is an apocalyptic number.

32551372355161 is the 5705381-st square number.

32551372355161 is the 2852691-st centered octagonal number.

It is an amenable number.

32551372355161 is a deficient number, since it is larger than the sum of its proper divisors (3333883416582).

32551372355161 is an frugal number, since it uses more digits than its factorization.

32551372355161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3078 (or 1539 counting only the distinct ones).

The product of its digits is 2835000, while the sum is 49.

The spelling of 32551372355161 in words is "thirty-two trillion, five hundred fifty-one billion, three hundred seventy-two million, three hundred fifty-five thousand, one hundred sixty-one".