6515400046 has 4 divisors (see below), whose sum is σ = 9773100072. Its totient is φ = 3257700022.

The previous prime is 6515399993. The next prime is 6515400079. The reversal of 6515400046 is 6400045156.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 6515399990 and 6515400017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1628850010 + ... + 1628850013.

It is an arithmetic number, because the mean of its divisors is an integer number (2443275018).

Almost surely, 2^6515400046 is an apocalyptic number.

6515400046 is a deficient number, since it is larger than the sum of its proper divisors (3257700026).

6515400046 is a wasteful number, since it uses less digits than its factorization.

6515400046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3257700025.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 6515400046 is about 80718.0280110955. The cubic root of 6515400046 is about 1867.7282837395.

The spelling of 6515400046 in words is "six billion, five hundred fifteen million, four hundred thousand, forty-six".