2151672566 has 8 divisors (see below), whose sum is σ = 3229989744. Its totient is φ = 1075009320.

The previous prime is 2151672553. The next prime is 2151672577. The reversal of 2151672566 is 6652761512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410225 + ... + 415436.

It is an arithmetic number, because the mean of its divisors is an integer number (403748718).

Almost surely, 2^2151672566 is an apocalyptic number.

2151672566 is a deficient number, since it is larger than the sum of its proper divisors (1078317178).

2151672566 is a wasteful number, since it uses less digits than its factorization.

2151672566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826966.

The product of its digits is 151200, while the sum is 41.

The square root of 2151672566 is about 46386.1247141858. The cubic root of 2151672566 is about 1290.9974790168.

The spelling of 2151672566 in words is "two billion, one hundred fifty-one million, six hundred seventy-two thousand, five hundred sixty-six".