61515670583 has 2 divisors, whose sum is σ = 61515670584. Its totient is φ = 61515670582.

The previous prime is 61515670553. The next prime is 61515670639. The reversal of 61515670583 is 38507651516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61515670583 - 2⁶ = 61515670519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61515670553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30757835291 + 30757835292.

It is an arithmetic number, because the mean of its divisors is an integer number (30757835292).

Almost surely, 2^61515670583 is an apocalyptic number.

61515670583 is a deficient number, since it is larger than the sum of its proper divisors (1).

61515670583 is an equidigital number, since it uses as much as digits as its factorization.

61515670583 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756000, while the sum is 47.

The spelling of 61515670583 in words is "sixty-one billion, five hundred fifteen million, six hundred seventy thousand, five hundred eighty-three".