642703031288 has 64 divisors (see below), whose sum is σ = 1374380421120. Its totient is φ = 279966297600.

The previous prime is 642703031273. The next prime is 642703031309. The reversal of 642703031288 is 882130307246.

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, 3217028 + ... + 3410963.

It is an arithmetic number, because the mean of its divisors is an integer number (21474694080).

Almost surely, 2^642703031288 is an apocalyptic number.

642703031288 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

642703031288 is an abundant number, since it is smaller than the sum of its proper divisors (731677389832).

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

642703031288 is a wasteful number, since it uses less digits than its factorization.

642703031288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6628068 (or 6628064 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 642703031288 in words is "six hundred forty-two billion, seven hundred three million, thirty-one thousand, two hundred eighty-eight".