164344751540 has 48 divisors (see below), whose sum is σ = 361744524288. Its totient is φ = 62597720064.

The previous prime is 164344751539. The next prime is 164344751551. The reversal of 164344751540 is 45157443461.

It is a junction number, because it is equal to n+sod(n) for n = 164344751491 and 164344751500.

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, 698477 + ... + 903636.

It is an arithmetic number, because the mean of its divisors is an integer number (7536344256).

Almost surely, 2^164344751540 is an apocalyptic number.

164344751540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164344751540 is an abundant number, since it is smaller than the sum of its proper divisors (197399772748).

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

164344751540 is a wasteful number, since it uses less digits than its factorization.

164344751540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602368 (or 1602366 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 44.

The spelling of 164344751540 in words is "one hundred sixty-four billion, three hundred forty-four million, seven hundred fifty-one thousand, five hundred forty".