164744435240 has 64 divisors (see below), whose sum is σ = 462140242560. Its totient is φ = 51348913920.

The previous prime is 164744435171. The next prime is 164744435309. The reversal of 164744435240 is 42534447461.

It is an interprime number because it is at equal distance from previous prime (164744435171) and next prime (164744435309).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 164744435191 and 164744435200.

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, 26741147 + ... + 26747306.

It is an arithmetic number, because the mean of its divisors is an integer number (7220941290).

Almost surely, 2^164744435240 is an apocalyptic number.

164744435240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164744435240 is an abundant number, since it is smaller than the sum of its proper divisors (297395807320).

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

164744435240 is a wasteful number, since it uses less digits than its factorization.

164744435240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53488482 (or 53488478 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 44.

The spelling of 164744435240 in words is "one hundred sixty-four billion, seven hundred forty-four million, four hundred thirty-five thousand, two hundred forty".