61510256152245 has 24 divisors (see below), whose sum is σ = 107716929681816. Its totient is φ = 32467269224448.

The previous prime is 61510256152229. The next prime is 61510256152259. The reversal of 61510256152245 is 54225165201516.

It is a happy number.

61510256152245 is a `hidden beast` number, since 6 + 1 + 5 + 1 + 0 + 2 + 5 + 615 + 2 + 24 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 257813109009 + 61252443043236 = 507753^2 + 7826394^2 .

It is not a de Polignac number, because 61510256152245 - 2⁴ = 61510256152229 is a prime.

It is a super-2 number, since 2×61510256152245² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61510256152245.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7045843992 + ... + 7045852721.

It is an arithmetic number, because the mean of its divisors is an integer number (4488205403409).

Almost surely, 2^{61510256152245} is an apocalyptic number.

It is an amenable number.

61510256152245 is a deficient number, since it is larger than the sum of its proper divisors (46206673529571).

61510256152245 is a wasteful number, since it uses less digits than its factorization.

61510256152245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14091696821 (or 14091696818 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 45.

The spelling of 61510256152245 in words is "sixty-one trillion, five hundred ten billion, two hundred fifty-six million, one hundred fifty-two thousand, two hundred forty-five".