77630048545 has 12 divisors (see below), whose sum is σ = 108365210964. Its totient is φ = 53232033120.

The previous prime is 77630048539. The next prime is 77630048677. The reversal of 77630048545 is 54584003677.

It can be written as a sum of positive squares in 2 ways, for example, as 14983963281 + 62646085264 = 122409^2 + 250292^2 .

It is not a de Polignac number, because 77630048545 - 2³ = 77630048537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158428426 + ... + 158428915.

It is an arithmetic number, because the mean of its divisors is an integer number (9030434247).

Almost surely, 2^77630048545 is an apocalyptic number.

It is an amenable number.

77630048545 is a deficient number, since it is larger than the sum of its proper divisors (30735162419).

77630048545 is a wasteful number, since it uses less digits than its factorization.

77630048545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316857360 (or 316857353 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 49.

The spelling of 77630048545 in words is "seventy-seven billion, six hundred thirty million, forty-eight thousand, five hundred forty-five".