61144345395 has 64 divisors (see below), whose sum is σ = 124384896000. Its totient is φ = 27916800768.

The previous prime is 61144345369. The next prime is 61144345411. The reversal of 61144345395 is 59354344116.

61144345395 is a `hidden beast` number, since 61 + 14 + 43 + 4 + 539 + 5 = 666.

It is not a de Polignac number, because 61144345395 - 2⁷ = 61144345267 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 61144345395.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 724516 + ... + 804494.

It is an arithmetic number, because the mean of its divisors is an integer number (1943514000).

Almost surely, 2^61144345395 is an apocalyptic number.

61144345395 is an abundant number, since it is smaller than the sum of its proper divisors (63240550605).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61144345395 is a wasteful number, since it uses less digits than its factorization.

61144345395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80809 (or 80803 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The spelling of 61144345395 in words is "sixty-one billion, one hundred forty-four million, three hundred forty-five thousand, three hundred ninety-five".