77206217130 has 48 divisors (see below), whose sum is σ = 229412761344. Its totient is φ = 17647135200.

The previous prime is 77206217107. The next prime is 77206217131. The reversal of 77206217130 is 3171260277.

77206217130 is a `hidden beast` number, since 7 + 7 + 20 + 621 + 7 + 1 + 3 + 0 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (77206217131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61274146 + ... + 61275405.

It is an arithmetic number, because the mean of its divisors is an integer number (4779432528).

Almost surely, 2^77206217130 is an apocalyptic number.

77206217130 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

77206217130 is an abundant number, since it is smaller than the sum of its proper divisors (152206544214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77206217130 is a wasteful number, since it uses less digits than its factorization.

77206217130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122549571 (or 122549568 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The spelling of 77206217130 in words is "seventy-seven billion, two hundred six million, two hundred seventeen thousand, one hundred thirty".