612465684820 has 24 divisors (see below), whose sum is σ = 1403103205728. Its totient is φ = 222714794400.

The previous prime is 612465684697. The next prime is 612465684827. The reversal of 612465684820 is 28486564216.

It is a happy number.

It is a super-2 number, since 2×612465684820² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612465684827) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1391967246 + ... + 1391967685.

It is an arithmetic number, because the mean of its divisors is an integer number (58462633572).

Almost surely, 2^612465684820 is an apocalyptic number.

It is an amenable number.

612465684820 is an abundant number, since it is smaller than the sum of its proper divisors (790637520908).

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

612465684820 is a wasteful number, since it uses less digits than its factorization.

612465684820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783934951 (or 2783934949 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 52.

The spelling of 612465684820 in words is "six hundred twelve billion, four hundred sixty-five million, six hundred eighty-four thousand, eight hundred twenty".