642014077752244 has 12 divisors (see below), whose sum is σ = 1126536766460644. Its totient is φ = 320146430192064.

The previous prime is 642014077752137. The next prime is 642014077752253. The reversal of 642014077752244 is 442257770410246.

It can be written as a sum of positive squares in 2 ways, for example, as 305414071210000 + 336600006542244 = 17476100^2 + 18346662^2 .

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215152169337 + ... + 215152172320.

Almost surely, 2^{642014077752244} is an apocalyptic number.

It is an amenable number.

642014077752244 is a deficient number, since it is larger than the sum of its proper divisors (484522688708400).

642014077752244 is a wasteful number, since it uses less digits than its factorization.

642014077752244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430304342034 (or 430304342032 counting only the distinct ones).

The product of its (nonzero) digits is 21073920, while the sum is 55.

The spelling of 642014077752244 in words is "six hundred forty-two trillion, fourteen billion, seventy-seven million, seven hundred fifty-two thousand, two hundred forty-four".