77531032451 has 4 divisors (see below), whose sum is σ = 77542626504. Its totient is φ = 77519438400.

The previous prime is 77531032429. The next prime is 77531032459. The reversal of 77531032451 is 15423013577.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77531032451 is a prime.

It is a super-2 number, since 2×77531032451² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77531032459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5786990 + ... + 5800371.

It is an arithmetic number, because the mean of its divisors is an integer number (19385656626).

Almost surely, 2^77531032451 is an apocalyptic number.

77531032451 is a deficient number, since it is larger than the sum of its proper divisors (11594053).

77531032451 is a wasteful number, since it uses less digits than its factorization.

77531032451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11594052.

The product of its (nonzero) digits is 88200, while the sum is 38.

The spelling of 77531032451 in words is "seventy-seven billion, five hundred thirty-one million, thirty-two thousand, four hundred fifty-one".