642723503148 has 36 divisors (see below), whose sum is σ = 1629483175320. Its totient is φ = 213605433216.

The previous prime is 642723503137. The next prime is 642723503153. The reversal of 642723503148 is 841305327246.

642723503148 is a `hidden beast` number, since 64 + 2 + 72 + 3 + 503 + 14 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×642723503148³ (a number of 36 digits) contains 333 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 11 ways as a sum of consecutive naturals, for example, 26476638 + ... + 26500901.

Almost surely, 2^642723503148 is an apocalyptic number.

It is an amenable number.

642723503148 is an abundant number, since it is smaller than the sum of its proper divisors (986759672172).

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

642723503148 is a wasteful number, since it uses less digits than its factorization.

642723503148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52977886 (or 52977881 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 642723503148 in words is "six hundred forty-two billion, seven hundred twenty-three million, five hundred three thousand, one hundred forty-eight".