77432401273 has 8 divisors (see below), whose sum is σ = 79510324320. Its totient is φ = 75363493920.

The previous prime is 77432401219. The next prime is 77432401283. The reversal of 77432401273 is 37210423477.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77432401273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77432401283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2236515 + ... + 2270872.

It is an arithmetic number, because the mean of its divisors is an integer number (9938790540).

Almost surely, 2^77432401273 is an apocalyptic number.

It is an amenable number.

77432401273 is a deficient number, since it is larger than the sum of its proper divisors (2077923047).

77432401273 is a wasteful number, since it uses less digits than its factorization.

77432401273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4507847.

The product of its (nonzero) digits is 197568, while the sum is 40.

The spelling of 77432401273 in words is "seventy-seven billion, four hundred thirty-two million, four hundred one thousand, two hundred seventy-three".