121657534077 has 8 divisors (see below), whose sum is σ = 164959368480. Its totient is φ = 79730361200.

The previous prime is 121657534013. The next prime is 121657534091. The reversal of 121657534077 is 770435756121.

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

It is a cyclic number.

It is not a de Polignac number, because 121657534077 - 2⁶ = 121657534013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121657584077) 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, 343665174 + ... + 343665527.

It is an arithmetic number, because the mean of its divisors is an integer number (20619921060).

Almost surely, 2^121657534077 is an apocalyptic number.

It is an amenable number.

121657534077 is a deficient number, since it is larger than the sum of its proper divisors (43301834403).

121657534077 is an equidigital number, since it uses as much as digits as its factorization.

121657534077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687330763.

The product of its (nonzero) digits is 1234800, while the sum is 48.

The spelling of 121657534077 in words is "one hundred twenty-one billion, six hundred fifty-seven million, five hundred thirty-four thousand, seventy-seven".