615202164012 has 12 divisors (see below), whose sum is σ = 1435471716056. Its totient is φ = 205067388000.

The previous prime is 615202163999. The next prime is 615202164023. The reversal of 615202164012 is 210461202516.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×615202164012² (a number of 24 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 25633423489 + ... + 25633423512.

Almost surely, 2^615202164012 is an apocalyptic number.

It is an amenable number.

615202164012 is an abundant number, since it is smaller than the sum of its proper divisors (820269552044).

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

615202164012 is a wasteful number, since it uses less digits than its factorization.

615202164012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51266847008 (or 51266847006 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 615202164012 its reverse (210461202516), we get a palindrome (825663366528).

The spelling of 615202164012 in words is "six hundred fifteen billion, two hundred two million, one hundred sixty-four thousand, twelve".