137768804078 has 4 divisors (see below), whose sum is σ = 206653206120. Its totient is φ = 68884402038.

The previous prime is 137768804077. The next prime is 137768804293. The reversal of 137768804078 is 870408867731.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137768804071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34442201018 + ... + 34442201021.

It is an arithmetic number, because the mean of its divisors is an integer number (51663301530).

Almost surely, 2^137768804078 is an apocalyptic number.

137768804078 is a deficient number, since it is larger than the sum of its proper divisors (68884402042).

137768804078 is an equidigital number, since it uses as much as digits as its factorization.

137768804078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68884402041.

The product of its (nonzero) digits is 12644352, while the sum is 59.

The spelling of 137768804078 in words is "one hundred thirty-seven billion, seven hundred sixty-eight million, eight hundred four thousand, seventy-eight".