61305304134077 has 4 divisors (see below), whose sum is σ = 61305401269536. Its totient is φ = 61305206998620.

The previous prime is 61305304133993. The next prime is 61305304134119. The reversal of 61305304134077 is 77043140350316.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61305304134077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61305303134077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47614799 + ... + 48885372.

It is an arithmetic number, because the mean of its divisors is an integer number (15326350317384).

Almost surely, 2^{61305304134077} is an apocalyptic number.

It is an amenable number.

61305304134077 is a deficient number, since it is larger than the sum of its proper divisors (97135459).

61305304134077 is an equidigital number, since it uses as much as digits as its factorization.

61305304134077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97135458.

The product of its (nonzero) digits is 635040, while the sum is 44.

The spelling of 61305304134077 in words is "sixty-one trillion, three hundred five billion, three hundred four million, one hundred thirty-four thousand, seventy-seven".