77335198906 has 32 divisors (see below), whose sum is σ = 135173526912. Its totient is φ = 32497364160.

The previous prime is 77335198877. The next prime is 77335198937. The reversal of 77335198906 is 60989153377.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127885 + ... + 413551.

It is an arithmetic number, because the mean of its divisors is an integer number (4224172716).

Almost surely, 2^77335198906 is an apocalyptic number.

77335198906 is a deficient number, since it is larger than the sum of its proper divisors (57838328006).

77335198906 is a wasteful number, since it uses less digits than its factorization.

77335198906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286054.

The product of its (nonzero) digits is 8573040, while the sum is 58.

The spelling of 77335198906 in words is "seventy-seven billion, three hundred thirty-five million, one hundred ninety-eight thousand, nine hundred six".