77258397747 has 16 divisors (see below), whose sum is σ = 103570227488. Its totient is φ = 51226214400.

The previous prime is 77258397743. The next prime is 77258397757. The reversal of 77258397747 is 74779385277.

It is not a de Polignac number, because 77258397747 - 2² = 77258397743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77258397743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2765883 + ... + 2793675.

It is an arithmetic number, because the mean of its divisors is an integer number (6473139218).

Almost surely, 2^77258397747 is an apocalyptic number.

77258397747 is a deficient number, since it is larger than the sum of its proper divisors (26311829741).

77258397747 is a wasteful number, since it uses less digits than its factorization.

77258397747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32790.

The product of its digits is 145212480, while the sum is 66.

The spelling of 77258397747 in words is "seventy-seven billion, two hundred fifty-eight million, three hundred ninety-seven thousand, seven hundred forty-seven".