134378621077 has 4 divisors (see below), whose sum is σ = 134402272480. Its totient is φ = 134354969676.

The previous prime is 134378621071. The next prime is 134378621119. The reversal of 134378621077 is 770126873431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 134378621077 - 2¹¹ = 134378619029 is a prime.

It is a super-2 number, since 2×134378621077² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 134378621077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134378621071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11817177 + ... + 11828542.

It is an arithmetic number, because the mean of its divisors is an integer number (33600568120).

Almost surely, 2^134378621077 is an apocalyptic number.

It is an amenable number.

134378621077 is a deficient number, since it is larger than the sum of its proper divisors (23651403).

134378621077 is an equidigital number, since it uses as much as digits as its factorization.

134378621077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23651402.

The product of its (nonzero) digits is 1185408, while the sum is 49.

The spelling of 134378621077 in words is "one hundred thirty-four billion, three hundred seventy-eight million, six hundred twenty-one thousand, seventy-seven".