215502040646645 has 16 divisors (see below), whose sum is σ = 265028142274560. Its totient is φ = 168121592937600.

The previous prime is 215502040646531. The next prime is 215502040646689. The reversal of 215502040646645 is 546646040205512.

It is not a de Polignac number, because 215502040646645 - 2¹⁶ = 215502040581109 is a prime.

It is a super-2 number, since 2×215502040646645² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 215502040646593 and 215502040646602.

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, 234295241 + ... + 235213230.

It is an arithmetic number, because the mean of its divisors is an integer number (16564258892160).

Almost surely, 2^{215502040646645} is an apocalyptic number.

It is an amenable number.

215502040646645 is a deficient number, since it is larger than the sum of its proper divisors (49526101627915).

215502040646645 is a wasteful number, since it uses less digits than its factorization.

215502040646645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469510756.

The product of its (nonzero) digits is 6912000, while the sum is 50.

The spelling of 215502040646645 in words is "two hundred fifteen trillion, five hundred two billion, forty million, six hundred forty-six thousand, six hundred forty-five".