612421156006164 has 144 divisors (see below), whose sum is σ = 1602406697463936. Its totient is φ = 197079138201600.

The previous prime is 612421156006147. The next prime is 612421156006229. The reversal of 612421156006164 is 461600651124216.

612421156006164 is a `hidden beast` number, since 6 + 1 + 2 + 4 + 21 + 1 + 5 + 6 + 0 + 0 + 616 + 4 = 666.

It is a super-2 number, since 2×612421156006164² (a number of 30 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 47 ways as a sum of consecutive naturals, for example, 983423539 + ... + 984046085.

It is an arithmetic number, because the mean of its divisors is an integer number (11127824287944).

Almost surely, 2^{612421156006164} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612421156006164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (801203348731968).

612421156006164 is an abundant number, since it is smaller than the sum of its proper divisors (989985541457772).

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

612421156006164 is a wasteful number, since it uses less digits than its factorization.

612421156006164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629566 (or 629561 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 612421156006164 in words is "six hundred twelve trillion, four hundred twenty-one billion, one hundred fifty-six million, six thousand, one hundred sixty-four".