77707648953 has 24 divisors (see below), whose sum is σ = 122842190016. Its totient is φ = 46944093600.

The previous prime is 77707648933. The next prime is 77707648957. The reversal of 77707648953 is 35984670777.

It is not a de Polignac number, because 77707648953 - 2¹³ = 77707640761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77707648957) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1231150 + ... + 1292727.

It is an arithmetic number, because the mean of its divisors is an integer number (5118424584).

Almost surely, 2^77707648953 is an apocalyptic number.

It is an amenable number.

77707648953 is a deficient number, since it is larger than the sum of its proper divisors (45134541063).

77707648953 is a wasteful number, since it uses less digits than its factorization.

77707648953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2524205 (or 2524202 counting only the distinct ones).

The product of its (nonzero) digits is 62233920, while the sum is 63.

The spelling of 77707648953 in words is "seventy-seven billion, seven hundred seven million, six hundred forty-eight thousand, nine hundred fifty-three".