121650626255 has 32 divisors (see below), whose sum is σ = 152683004160. Its totient is φ = 92982988800.

The previous prime is 121650626243. The next prime is 121650626267. The reversal of 121650626255 is 552626056121.

It is an interprime number because it is at equal distance from previous prime (121650626243) and next prime (121650626267).

It is a de Polignac number, because none of the positive numbers 2^k-121650626255 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1488455 + ... + 1568055.

It is an arithmetic number, because the mean of its divisors is an integer number (4771343880).

Almost surely, 2^121650626255 is an apocalyptic number.

121650626255 is a deficient number, since it is larger than the sum of its proper divisors (31032377905).

121650626255 is an equidigital number, since it uses as much as digits as its factorization.

121650626255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79811.

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 121650626255 in words is "one hundred twenty-one billion, six hundred fifty million, six hundred twenty-six thousand, two hundred fifty-five".