122661260636554 has 8 divisors (see below), whose sum is σ = 184115127322980. Its totient is φ = 61289551528896.

The previous prime is 122661260636503. The next prime is 122661260636573. The reversal of 122661260636554 is 455636062166221.

It can be written as a sum of positive squares in 2 ways, for example, as 120403985765625 + 2257274870929 = 10972875^2 + 1502423^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 122661260636495 and 122661260636504.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20539390959 + ... + 20539396930.

Almost surely, 2^{122661260636554} is an apocalyptic number.

122661260636554 is a deficient number, since it is larger than the sum of its proper divisors (61453866686426).

122661260636554 is a wasteful number, since it uses less digits than its factorization.

122661260636554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41078789384.

The product of its (nonzero) digits is 18662400, while the sum is 55.

The spelling of 122661260636554 in words is "one hundred twenty-two trillion, six hundred sixty-one billion, two hundred sixty million, six hundred thirty-six thousand, five hundred fifty-four".