61321002808315 has 8 divisors (see below), whose sum is σ = 74114593323120. Its totient is φ = 48703875611232.

The previous prime is 61321002808297. The next prime is 61321002808319. The reversal of 61321002808315 is 51380820012316.

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

It is a cyclic number.

It is not a de Polignac number, because 61321002808315 - 2²¹ = 61321000711163 is a prime.

It is a super-2 number, since 2×61321002808315² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61321002808319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44115828664 + ... + 44115830053.

It is an arithmetic number, because the mean of its divisors is an integer number (9264324165390).

Almost surely, 2^{61321002808315} is an apocalyptic number.

61321002808315 is a deficient number, since it is larger than the sum of its proper divisors (12793590514805).

61321002808315 is a wasteful number, since it uses less digits than its factorization.

61321002808315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88231658861.

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 61321002808315 in words is "sixty-one trillion, three hundred twenty-one billion, two million, eight hundred eight thousand, three hundred fifteen".