32511973121 has 4 divisors (see below), whose sum is σ = 32537314992. Its totient is φ = 32486631252.

The previous prime is 32511973099. The next prime is 32511973129. The reversal of 32511973121 is 12137911523.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12137911523 = 31 ⋅391545533.

It is a cyclic number.

It is not a de Polignac number, because 32511973121 - 2⁶ = 32511973057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32511973129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12669011 + ... + 12671576.

It is an arithmetic number, because the mean of its divisors is an integer number (8134328748).

Almost surely, 2^32511973121 is an apocalyptic number.

It is an amenable number.

32511973121 is a deficient number, since it is larger than the sum of its proper divisors (25341871).

32511973121 is a wasteful number, since it uses less digits than its factorization.

32511973121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25341870.

The product of its digits is 11340, while the sum is 35.

The spelling of 32511973121 in words is "thirty-two billion, five hundred eleven million, nine hundred seventy-three thousand, one hundred twenty-one".