76770356545 has 8 divisors (see below), whose sum is σ = 92126200680. Its totient is φ = 61415103360.

The previous prime is 76770356543. The next prime is 76770356549. The reversal of 76770356545 is 54565307767.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4520679696 + 72249676849 = 67236^2 + 268793^2 .

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

It is not a de Polignac number, because 76770356545 - 2¹ = 76770356543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76770356543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222355 + ... + 450535.

It is an arithmetic number, because the mean of its divisors is an integer number (11515775085).

Almost surely, 2^76770356545 is an apocalyptic number.

It is an amenable number.

76770356545 is a deficient number, since it is larger than the sum of its proper divisors (15355844135).

76770356545 is a wasteful number, since it uses less digits than its factorization.

76770356545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295475.

The product of its (nonzero) digits is 18522000, while the sum is 55.

The spelling of 76770356545 in words is "seventy-six billion, seven hundred seventy million, three hundred fifty-six thousand, five hundred forty-five".