244581425642 has 4 divisors (see below), whose sum is σ = 366872138466. Its totient is φ = 122290712820.

The previous prime is 244581425603. The next prime is 244581425651. The reversal of 244581425642 is 246524185442.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246524185442 = 2 ⋅123262092721.

It can be written as a sum of positive squares in only one way, i.e., 158737699561 + 85843726081 = 398419^2 + 292991^2 .

It is a super-2 number, since 2×244581425642² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61145356409 + ... + 61145356412.

Almost surely, 2^244581425642 is an apocalyptic number.

244581425642 is a deficient number, since it is larger than the sum of its proper divisors (122290712824).

244581425642 is a wasteful number, since it uses less digits than its factorization.

244581425642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122290712823.

The product of its digits is 2457600, while the sum is 47.

The spelling of 244581425642 in words is "two hundred forty-four billion, five hundred eighty-one million, four hundred twenty-five thousand, six hundred forty-two".