6510561157 has 4 divisors (see below), whose sum is σ = 6661969600. Its totient is φ = 6359152716.

The previous prime is 6510561151. The next prime is 6510561163. The reversal of 6510561157 is 7511650156.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (6510561151) and next prime (6510561163).

It is a cyclic number.

It is not a de Polignac number, because 6510561157 - 2¹⁵ = 6510528389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6510561151) 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, 75704157 + ... + 75704242.

It is an arithmetic number, because the mean of its divisors is an integer number (1665492400).

Almost surely, 2^6510561157 is an apocalyptic number.

It is an amenable number.

6510561157 is a deficient number, since it is larger than the sum of its proper divisors (151408443).

6510561157 is a wasteful number, since it uses less digits than its factorization.

6510561157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151408442.

The product of its (nonzero) digits is 31500, while the sum is 37.

The square root of 6510561157 is about 80688.0484148675. The cubic root of 6510561157 is about 1867.2657913828.

The spelling of 6510561157 in words is "six billion, five hundred ten million, five hundred sixty-one thousand, one hundred fifty-seven".