612121575792 has 40 divisors (see below), whose sum is σ = 1581342783616. Its totient is φ = 204036820416.

The previous prime is 612121575787. The next prime is 612121575797. The reversal of 612121575792 is 297575121216.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (612121575787) and next prime (612121575797).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612121575797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4261203 + ... + 4402509.

Almost surely, 2^612121575792 is an apocalyptic number.

It is an amenable number.

612121575792 is an abundant number, since it is smaller than the sum of its proper divisors (969221207824).

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

612121575792 is a wasteful number, since it uses less digits than its factorization.

612121575792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231565 (or 231559 counting only the distinct ones).

The product of its digits is 529200, while the sum is 48.

The spelling of 612121575792 in words is "six hundred twelve billion, one hundred twenty-one million, five hundred seventy-five thousand, seven hundred ninety-two".