121541492736 has 336 divisors, whose sum is σ = 371447385120. Its totient is φ = 39749419008.

The previous prime is 121541492719. The next prime is 121541492747. The reversal of 121541492736 is 637294145121.

121541492736 is a `hidden beast` number, since 1 + 2 + 154 + 1 + 492 + 7 + 3 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 121541492691 and 121541492700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2293235686 + ... + 2293235738.

It is an arithmetic number, because the mean of its divisors is an integer number (1105498170).

Almost surely, 2^121541492736 is an apocalyptic number.

121541492736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121541492736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185723692560).

121541492736 is an abundant number, since it is smaller than the sum of its proper divisors (249905892384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121541492736 is an frugal number, since it uses more digits than its factorization.

121541492736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 58 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The spelling of 121541492736 in words is "one hundred twenty-one billion, five hundred forty-one million, four hundred ninety-two thousand, seven hundred thirty-six".