77256650045 has 4 divisors (see below), whose sum is σ = 92707980060. Its totient is φ = 61805320032.

The previous prime is 77256650039. The next prime is 77256650077. The reversal of 77256650045 is 54005665277.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54005665277 = 1193 ⋅45268789.

It can be written as a sum of positive squares in 2 ways, for example, as 34501576516 + 42755073529 = 185746^2 + 206773^2 .

It is a cyclic number.

It is not a de Polignac number, because 77256650045 - 2²⁶ = 77189541181 is a prime.

It is a super-3 number, since 3×77256650045³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7725665000 + ... + 7725665009.

It is an arithmetic number, because the mean of its divisors is an integer number (23176995015).

Almost surely, 2^77256650045 is an apocalyptic number.

It is an amenable number.

77256650045 is a deficient number, since it is larger than the sum of its proper divisors (15451330015).

77256650045 is a wasteful number, since it uses less digits than its factorization.

77256650045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15451330014.

The product of its (nonzero) digits is 1764000, while the sum is 47.

The spelling of 77256650045 in words is "seventy-seven billion, two hundred fifty-six million, six hundred fifty thousand, forty-five".