6921451532 has 12 divisors (see below), whose sum is σ = 12113167416. Its totient is φ = 3460546560.

The previous prime is 6921451513. The next prime is 6921451567. The reversal of 6921451532 is 2351541296.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

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, 81932 + ... + 143372.

It is an arithmetic number, because the mean of its divisors is an integer number (1009430618).

Almost surely, 2^6921451532 is an apocalyptic number.

It is an amenable number.

6921451532 is a deficient number, since it is larger than the sum of its proper divisors (5191715884).

6921451532 is a wasteful number, since it uses less digits than its factorization.

6921451532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89608 (or 89606 counting only the distinct ones).

The product of its digits is 64800, while the sum is 38.

The square root of 6921451532 is about 83195.2614756393. The cubic root of 6921451532 is about 1905.7491175961.

The spelling of 6921451532 in words is "six billion, nine hundred twenty-one million, four hundred fifty-one thousand, five hundred thirty-two".