77032137445 has 4 divisors (see below), whose sum is σ = 92438564940. Its totient is φ = 61625709952.

The previous prime is 77032137433. The next prime is 77032137473. The reversal of 77032137445 is 54473123077.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54473123077 = 131 ⋅415825367.

It can be written as a sum of positive squares in 2 ways, for example, as 60574069924 + 16458067521 = 246118^2 + 128289^2 .

It is a cyclic number.

It is not a de Polignac number, because 77032137445 - 2⁷ = 77032137317 is a prime.

It is a super-3 number, since 3×77032137445³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7703213740 + ... + 7703213749.

It is an arithmetic number, because the mean of its divisors is an integer number (23109641235).

Almost surely, 2^77032137445 is an apocalyptic number.

It is an amenable number.

77032137445 is a deficient number, since it is larger than the sum of its proper divisors (15406427495).

77032137445 is a wasteful number, since it uses less digits than its factorization.

77032137445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15406427494.

The product of its (nonzero) digits is 493920, while the sum is 43.

The spelling of 77032137445 in words is "seventy-seven billion, thirty-two million, one hundred thirty-seven thousand, four hundred forty-five".