6451780476 has 24 divisors (see below), whose sum is σ = 15137331664. Its totient is φ = 2138711040.

The previous prime is 6451780469. The next prime is 6451780499. The reversal of 6451780476 is 6740871546.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1483045 + ... + 1487388.

Almost surely, 2^6451780476 is an apocalyptic number.

It is an amenable number.

6451780476 is an abundant number, since it is smaller than the sum of its proper divisors (8685551188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6451780476 is a wasteful number, since it uses less digits than its factorization.

6451780476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2970621 (or 2970619 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 48.

The square root of 6451780476 is about 80322.9760155835. The cubic root of 6451780476 is about 1861.6292499917.

The spelling of 6451780476 in words is "six billion, four hundred fifty-one million, seven hundred eighty thousand, four hundred seventy-six".