77323345431 has 8 divisors (see below), whose sum is σ = 103100101104. Its totient is φ = 51547743360.

The previous prime is 77323345361. The next prime is 77323345433. The reversal of 77323345431 is 13454332377.

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

It is not a de Polignac number, because 77323345431 - 2⁷ = 77323345303 is a prime.

It is a super-2 number, since 2×77323345431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77323345433) 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, 117540 + ... + 410441.

It is an arithmetic number, because the mean of its divisors is an integer number (12887512638).

Almost surely, 2^77323345431 is an apocalyptic number.

77323345431 is a deficient number, since it is larger than the sum of its proper divisors (25776755673).

77323345431 is a wasteful number, since it uses less digits than its factorization.

77323345431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576801.

The product of its digits is 635040, while the sum is 42.

The spelling of 77323345431 in words is "seventy-seven billion, three hundred twenty-three million, three hundred forty-five thousand, four hundred thirty-one".