61315626153 has 4 divisors (see below), whose sum is σ = 81754168208. Its totient is φ = 40877084100.

The previous prime is 61315626149. The next prime is 61315626167. The reversal of 61315626153 is 35162651316.

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 not a de Polignac number, because 61315626153 - 2² = 61315626149 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61315626103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10219271023 + ... + 10219271028.

It is an arithmetic number, because the mean of its divisors is an integer number (20438542052).

Almost surely, 2^61315626153 is an apocalyptic number.

It is an amenable number.

61315626153 is a deficient number, since it is larger than the sum of its proper divisors (20438542055).

61315626153 is a wasteful number, since it uses less digits than its factorization.

61315626153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20438542054.

The product of its digits is 97200, while the sum is 39.

The spelling of 61315626153 in words is "sixty-one billion, three hundred fifteen million, six hundred twenty-six thousand, one hundred fifty-three".