77256561032146 has 8 divisors (see below), whose sum is σ = 115884932655744. Its totient is φ = 38628250146900.

The previous prime is 77256561032113. The next prime is 77256561032179. The reversal of 77256561032146 is 64123016565277.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (77256561032113) and next prime (77256561032179).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×77256561032146³ (a number of 43 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11859030 + ... + 17179921.

It is an arithmetic number, because the mean of its divisors is an integer number (14485616581968).

Almost surely, 2^{77256561032146} is an apocalyptic number.

77256561032146 is a deficient number, since it is larger than the sum of its proper divisors (38628371623598).

77256561032146 is a wasteful number, since it uses less digits than its factorization.

77256561032146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30369176.

The product of its (nonzero) digits is 12700800, while the sum is 55.

The spelling of 77256561032146 in words is "seventy-seven trillion, two hundred fifty-six billion, five hundred sixty-one million, thirty-two thousand, one hundred forty-six".