215551461334660 has 96 divisors (see below), whose sum is σ = 512283826857600. Its totient is φ = 75465119600640.

The previous prime is 215551461334579. The next prime is 215551461334679. The reversal of 215551461334660 is 66433164155512.

It is a junction number, because it is equal to n+sod(n) for n = 215551461334598 and 215551461334607.

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, 45602670 + ... + 50106949.

It is an arithmetic number, because the mean of its divisors is an integer number (5336289863100).

Almost surely, 2^{215551461334660} is an apocalyptic number.

215551461334660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215551461334660 is an abundant number, since it is smaller than the sum of its proper divisors (296732365522940).

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

215551461334660 is a wasteful number, since it uses less digits than its factorization.

215551461334660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95710021 (or 95710019 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 52.

The spelling of 215551461334660 in words is "two hundred fifteen trillion, five hundred fifty-one billion, four hundred sixty-one million, three hundred thirty-four thousand, six hundred sixty".