76657273771 has 32 divisors (see below), whose sum is σ = 85144209920. Its totient is φ = 68568643584.

The previous prime is 76657273739. The next prime is 76657273841. The reversal of 76657273771 is 17737275667.

It is a happy number.

It is a 14-Lehmer number, since φ(76657273771) divides (76657273771-1)¹⁴.

It is a cyclic number.

It is not a de Polignac number, because 76657273771 - 2⁵ = 76657273739 is a prime.

It is the 276871-st Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76657273571) by changing a digit.

It is a nontrivial repunit in base 276870.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52540240 + ... + 52541698.

It is an arithmetic number, because the mean of its divisors is an integer number (2660756560).

Almost surely, 2^76657273771 is an apocalyptic number.

76657273771 is a deficient number, since it is larger than the sum of its proper divisors (8486936149).

76657273771 is a wasteful number, since it uses less digits than its factorization.

76657273771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2195.

The product of its digits is 18151560, while the sum is 58.

The spelling of 76657273771 in words is "seventy-six billion, six hundred fifty-seven million, two hundred seventy-three thousand, seven hundred seventy-one".