77763675112061 has 4 divisors (see below), whose sum is σ = 77763788226300. Its totient is φ = 77763561997824.

The previous prime is 77763675111907. The next prime is 77763675112073. The reversal of 77763675112061 is 16021157636777.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42528410147161 + 35235264964900 = 6521381^2 + 5935930^2 .

It is a cyclic number.

It is not a de Polignac number, because 77763675112061 - 2¹⁴ = 77763675095677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77763675112661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55519556 + ... + 56902973.

It is an arithmetic number, because the mean of its divisors is an integer number (19440947056575).

Almost surely, 2^{77763675112061} is an apocalyptic number.

It is an amenable number.

77763675112061 is a deficient number, since it is larger than the sum of its proper divisors (113114239).

77763675112061 is a wasteful number, since it uses less digits than its factorization.

77763675112061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113114238.

The product of its (nonzero) digits is 15558480, while the sum is 59.

The spelling of 77763675112061 in words is "seventy-seven trillion, seven hundred sixty-three billion, six hundred seventy-five million, one hundred twelve thousand, sixty-one".