648156651846 has 32 divisors (see below), whose sum is σ = 1462924108800. Its totient is φ = 189638309280.

The previous prime is 648156651797. The next prime is 648156651881.

It is a happy number.

648156651846 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 648156651846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169318006 + ... + 169321833.

It is an arithmetic number, because the mean of its divisors is an integer number (45716378400).

Almost surely, 2^648156651846 is an apocalyptic number.

648156651846 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

648156651846 is an abundant number, since it is smaller than the sum of its proper divisors (814767456954).

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

648156651846 is a wasteful number, since it uses less digits than its factorization.

648156651846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338639884.

The product of its digits is 33177600, while the sum is 60.

The spelling of 648156651846 in words is "six hundred forty-eight billion, one hundred fifty-six million, six hundred fifty-one thousand, eight hundred forty-six".