121563405050415 has 64 divisors (see below), whose sum is σ = 205473969119232. Its totient is φ = 61291946419200.

The previous prime is 121563405050407. The next prime is 121563405050453. The reversal of 121563405050415 is 514050504365121.

It is not a de Polignac number, because 121563405050415 - 2³ = 121563405050407 is a prime.

It is a super-2 number, since 2×121563405050415² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8776326 + ... + 17892755.

It is an arithmetic number, because the mean of its divisors is an integer number (3210530767488).

Almost surely, 2^{121563405050415} is an apocalyptic number.

121563405050415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121563405050415 is a deficient number, since it is larger than the sum of its proper divisors (83910564068817).

121563405050415 is a wasteful number, since it uses less digits than its factorization.

121563405050415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26669360.

The product of its (nonzero) digits is 360000, while the sum is 42.

The spelling of 121563405050415 in words is "one hundred twenty-one trillion, five hundred sixty-three billion, four hundred five million, fifty thousand, four hundred fifteen".