77761152126457 has 4 divisors (see below), whose sum is σ = 77761175216256. Its totient is φ = 77761129036660.

The previous prime is 77761152126431. The next prime is 77761152126547. The reversal of 77761152126457 is 75462125116777.

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 77761152126457 - 2¹⁵ = 77761152093689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77761152126395 and 77761152126404.

It is not an unprimeable number, because it can be changed into a prime (77761152126407) 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, 5404669 + ... + 13591642.

It is an arithmetic number, because the mean of its divisors is an integer number (19440293804064).

Almost surely, 2^{77761152126457} is an apocalyptic number.

It is an amenable number.

77761152126457 is a deficient number, since it is larger than the sum of its proper divisors (23089799).

77761152126457 is a wasteful number, since it uses less digits than its factorization.

77761152126457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23089798.

The product of its digits is 34574400, while the sum is 61.

The spelling of 77761152126457 in words is "seventy-seven trillion, seven hundred sixty-one billion, one hundred fifty-two million, one hundred twenty-six thousand, four hundred fifty-seven".