77423253101 has 4 divisors (see below), whose sum is σ = 77428382400. Its totient is φ = 77418123804.

The previous prime is 77423253097. The next prime is 77423253109. The reversal of 77423253101 is 10135232477.

It is a happy number.

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 not a de Polignac number, because 77423253101 - 2² = 77423253097 is a prime.

It is a super-2 number, since 2×77423253101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77423253109) 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, 2541941 + ... + 2572218.

It is an arithmetic number, because the mean of its divisors is an integer number (19357095600).

Almost surely, 2^77423253101 is an apocalyptic number.

It is an amenable number.

77423253101 is a deficient number, since it is larger than the sum of its proper divisors (5129299).

77423253101 is a wasteful number, since it uses less digits than its factorization.

77423253101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5129298.

The product of its (nonzero) digits is 35280, while the sum is 35.

Adding to 77423253101 its reverse (10135232477), we get a palindrome (87558485578).

The spelling of 77423253101 in words is "seventy-seven billion, four hundred twenty-three million, two hundred fifty-three thousand, one hundred one".