129377199893 has 4 divisors (see below), whose sum is σ = 131199414048. Its totient is φ = 127554985740.

The previous prime is 129377199859. The next prime is 129377199937. The reversal of 129377199893 is 398991773921.

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 a de Polignac number, because none of the positive numbers 2^k-129377199893 is a prime.

It is a super-2 number, since 2×129377199893² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129377199493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 911106971 + ... + 911107112.

It is an arithmetic number, because the mean of its divisors is an integer number (32799853512).

Almost surely, 2^129377199893 is an apocalyptic number.

It is an amenable number.

129377199893 is a deficient number, since it is larger than the sum of its proper divisors (1822214155).

129377199893 is an equidigital number, since it uses as much as digits as its factorization.

129377199893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822214154.

The product of its digits is 46294416, while the sum is 68.

The spelling of 129377199893 in words is "one hundred twenty-nine billion, three hundred seventy-seven million, one hundred ninety-nine thousand, eight hundred ninety-three".