122777741647 has 8 divisors (see below), whose sum is σ = 133951047120. Its totient is φ = 111606384960.

The previous prime is 122777741629. The next prime is 122777741659. The reversal of 122777741647 is 746147777221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122777741647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122777741687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353872 + ... + 608917.

It is an arithmetic number, because the mean of its divisors is an integer number (16743880890).

Almost surely, 2^122777741647 is an apocalyptic number.

122777741647 is a deficient number, since it is larger than the sum of its proper divisors (11173305473).

122777741647 is a wasteful number, since it uses less digits than its factorization.

122777741647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974393.

The product of its digits is 6453888, while the sum is 55.

The spelling of 122777741647 in words is "one hundred twenty-two billion, seven hundred seventy-seven million, seven hundred forty-one thousand, six hundred forty-seven".