77498408742 has 32 divisors (see below), whose sum is σ = 172751875200. Its totient is φ = 23033582208.

The previous prime is 77498408717. The next prime is 77498408747. The reversal of 77498408742 is 24780489477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77498408747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19992492 + ... + 19996367.

It is an arithmetic number, because the mean of its divisors is an integer number (5398496100).

Almost surely, 2^77498408742 is an apocalyptic number.

77498408742 is an abundant number, since it is smaller than the sum of its proper divisors (95253466458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77498408742 is a wasteful number, since it uses less digits than its factorization.

77498408742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39988900.

The product of its (nonzero) digits is 25288704, while the sum is 60.

The spelling of 77498408742 in words is "seventy-seven billion, four hundred ninety-eight million, four hundred eight thousand, seven hundred forty-two".