6551402432515 has 8 divisors (see below), whose sum is σ = 8044512754608. Its totient is φ = 5119235388960.

The previous prime is 6551402432489. The next prime is 6551402432537. The reversal of 6551402432515 is 5152342041556.

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

It is not a de Polignac number, because 6551402432515 - 2³⁷ = 6413963479043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian 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, 15235819396 + ... + 15235819825.

It is an arithmetic number, because the mean of its divisors is an integer number (1005564094326).

Almost surely, 2^{6551402432515} is an apocalyptic number.

6551402432515 is a deficient number, since it is larger than the sum of its proper divisors (1493110322093).

6551402432515 is a wasteful number, since it uses less digits than its factorization.

6551402432515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30471639269.

The product of its (nonzero) digits is 720000, while the sum is 43.

The spelling of 6551402432515 in words is "six trillion, five hundred fifty-one billion, four hundred two million, four hundred thirty-two thousand, five hundred fifteen".