77308872157 has 16 divisors (see below), whose sum is σ = 85529304000. Its totient is φ = 69291699840.

The previous prime is 77308872139. The next prime is 77308872217. The reversal of 77308872157 is 75127880377.

It is not a de Polignac number, because 77308872157 - 2¹⁵ = 77308839389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77308872098 and 77308872107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77308872857) 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, 228538 + ... + 454804.

It is an arithmetic number, because the mean of its divisors is an integer number (5345581500).

Almost surely, 2^77308872157 is an apocalyptic number.

It is an amenable number.

77308872157 is a deficient number, since it is larger than the sum of its proper divisors (8220431843).

77308872157 is a wasteful number, since it uses less digits than its factorization.

77308872157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226716.

The product of its (nonzero) digits is 4609920, while the sum is 55.

The spelling of 77308872157 in words is "seventy-seven billion, three hundred eight million, eight hundred seventy-two thousand, one hundred fifty-seven".