77970758101 has 2 divisors, whose sum is σ = 77970758102. Its totient is φ = 77970758100.

The previous prime is 77970758051. The next prime is 77970758113. The reversal of 77970758101 is 10185707977.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47345408100 + 30625350001 = 217590^2 + 175001^2 .

It is a cyclic number.

It is not a de Polignac number, because 77970758101 - 2⁷ = 77970757973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77970758141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38985379050 + 38985379051.

It is an arithmetic number, because the mean of its divisors is an integer number (38985379051).

Almost surely, 2^77970758101 is an apocalyptic number.

It is an amenable number.

77970758101 is a deficient number, since it is larger than the sum of its proper divisors (1).

77970758101 is an equidigital number, since it uses as much as digits as its factorization.

77970758101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864360, while the sum is 52.

The spelling of 77970758101 in words is "seventy-seven billion, nine hundred seventy million, seven hundred fifty-eight thousand, one hundred one".