642861276192 has 48 divisors (see below), whose sum is σ = 1875012058080. Its totient is φ = 214287091776.

The previous prime is 642861276137. The next prime is 642861276193. The reversal of 642861276192 is 291672168246.

642861276192 is a `hidden beast` number, since 6 + 4 + 2 + 8 + 6 + 12 + 7 + 619 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (642861276193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372025338 + ... + 372027065.

It is an arithmetic number, because the mean of its divisors is an integer number (39062751210).

Almost surely, 2^642861276192 is an apocalyptic number.

It is an amenable number.

642861276192 is an abundant number, since it is smaller than the sum of its proper divisors (1232150781888).

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

642861276192 is a wasteful number, since it uses less digits than its factorization.

642861276192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744052422 (or 744052408 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 642861276192 in words is "six hundred forty-two billion, eight hundred sixty-one million, two hundred seventy-six thousand, one hundred ninety-two".