405648261612 has 108 divisors (see below), whose sum is σ = 1127645417808. Its totient is φ = 122862062400.

The previous prime is 405648261467. The next prime is 405648261637. The reversal of 405648261612 is 216162846504.

It is a happy number.

405648261612 is a `hidden beast` number, since 4 + 0 + 5 + 6 + 4 + 8 + 26 + 1 + 612 = 666.

It is a super-4 number, since 4×405648261612⁴ (a number of 48 digits) contains 4444 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 35 ways as a sum of consecutive naturals, for example, 9068662 + ... + 9113282.

It is an arithmetic number, because the mean of its divisors is an integer number (10441161276).

Almost surely, 2^405648261612 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 405648261612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (563822708904).

405648261612 is an abundant number, since it is smaller than the sum of its proper divisors (721997156196).

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

405648261612 is a wasteful number, since it uses less digits than its factorization.

405648261612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46740 (or 46724 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 405648261612 in words is "four hundred five billion, six hundred forty-eight million, two hundred sixty-one thousand, six hundred twelve".