6461257313587 has 4 divisors (see below), whose sum is σ = 6669684968896. Its totient is φ = 6252829658280.

The previous prime is 6461257313573. The next prime is 6461257313717. The reversal of 6461257313587 is 7853137521646.

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

It is a cyclic number.

It is not a de Polignac number, because 6461257313587 - 2²³ = 6461248924979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6461254313587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104213827608 + ... + 104213827669.

It is an arithmetic number, because the mean of its divisors is an integer number (1667421242224).

Almost surely, 2^{6461257313587} is an apocalyptic number.

6461257313587 is a deficient number, since it is larger than the sum of its proper divisors (208427655309).

6461257313587 is a wasteful number, since it uses less digits than its factorization.

6461257313587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208427655308.

The product of its digits is 25401600, while the sum is 58.

The spelling of 6461257313587 in words is "six trillion, four hundred sixty-one billion, two hundred fifty-seven million, three hundred thirteen thousand, five hundred eighty-seven".