77761128101372 has 6 divisors (see below), whose sum is σ = 136081974177408. Its totient is φ = 38880564050684.

The previous prime is 77761128101351. The next prime is 77761128101381. The reversal of 77761128101372 is 27310182116777.

77761128101372 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×77761128101372² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9720141012668 + ... + 9720141012675.

It is an arithmetic number, because the mean of its divisors is an integer number (22680329029568).

Almost surely, 2^{77761128101372} is an apocalyptic number.

It is an amenable number.

77761128101372 is a deficient number, since it is larger than the sum of its proper divisors (58320846076036).

77761128101372 is a wasteful number, since it uses less digits than its factorization.

77761128101372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19440282025347 (or 19440282025345 counting only the distinct ones).

The product of its (nonzero) digits is 1382976, while the sum is 53.

The spelling of 77761128101372 in words is "seventy-seven trillion, seven hundred sixty-one billion, one hundred twenty-eight million, one hundred one thousand, three hundred seventy-two".