121615541436 has 24 divisors (see below), whose sum is σ = 286524644224. Its totient is φ = 40144935600.

The previous prime is 121615541429. The next prime is 121615541441. The reversal of 121615541436 is 634145516121.

It is a junction number, because it is equal to n+sod(n) for n = 121615541394 and 121615541403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49195990 + ... + 49198461.

Almost surely, 2^121615541436 is an apocalyptic number.

It is an amenable number.

121615541436 is an abundant number, since it is smaller than the sum of its proper divisors (164909102788).

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

121615541436 is a wasteful number, since it uses less digits than its factorization.

121615541436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98394561 (or 98394559 counting only the distinct ones).

The product of its digits is 86400, while the sum is 39.

The spelling of 121615541436 in words is "one hundred twenty-one billion, six hundred fifteen million, five hundred forty-one thousand, four hundred thirty-six".