77425634087 has 8 divisors (see below), whose sum is σ = 81555653760. Its totient is φ = 73301113080.

The previous prime is 77425634081. The next prime is 77425634101. The reversal of 77425634087 is 78043652477.

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

It is not a de Polignac number, because 77425634087 - 2¹⁶ = 77425568551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77425634081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1345739 + ... + 1402092.

It is an arithmetic number, because the mean of its divisors is an integer number (10194456720).

Almost surely, 2^77425634087 is an apocalyptic number.

77425634087 is a deficient number, since it is larger than the sum of its proper divisors (4130019673).

77425634087 is a wasteful number, since it uses less digits than its factorization.

77425634087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2749333.

The product of its (nonzero) digits is 7902720, while the sum is 53.

The spelling of 77425634087 in words is "seventy-seven billion, four hundred twenty-five million, six hundred thirty-four thousand, eighty-seven".