642326811480 has 48 divisors (see below), whose sum is σ = 2087562138480. Its totient is φ = 171287149632.

The previous prime is 642326811461. The next prime is 642326811509. The reversal of 642326811480 is 84118623246.

642326811480 is a `hidden beast` number, since 6 + 423 + 2 + 6 + 81 + 148 + 0 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 892120212 + ... + 892120931.

It is an arithmetic number, because the mean of its divisors is an integer number (43490877885).

Almost surely, 2^642326811480 is an apocalyptic number.

642326811480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

642326811480 is an abundant number, since it is smaller than the sum of its proper divisors (1445235327000).

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

642326811480 is a wasteful number, since it uses less digits than its factorization.

642326811480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784241160 (or 1784241153 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The spelling of 642326811480 in words is "six hundred forty-two billion, three hundred twenty-six million, eight hundred eleven thousand, four hundred eighty".