32151294691 has 4 divisors (see below), whose sum is σ = 32227663984. Its totient is φ = 32074925400.

The previous prime is 32151294689. The next prime is 32151294719. The reversal of 32151294691 is 19649215123.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 32151294691 - 2¹ = 32151294689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32151294601) 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, 38184015 + ... + 38184856.

It is an arithmetic number, because the mean of its divisors is an integer number (8056915996).

Almost surely, 2^32151294691 is an apocalyptic number.

32151294691 is a deficient number, since it is larger than the sum of its proper divisors (76369293).

32151294691 is an equidigital number, since it uses as much as digits as its factorization.

32151294691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76369292.

The product of its digits is 116640, while the sum is 43.

The spelling of 32151294691 in words is "thirty-two billion, one hundred fifty-one million, two hundred ninety-four thousand, six hundred ninety-one".