247581255442 has 32 divisors (see below), whose sum is σ = 381282382080. Its totient is φ = 120516526080.

The previous prime is 247581255433. The next prime is 247581255491. The reversal of 247581255442 is 244552185742.

It is a super-2 number, since 2×247581255442² (a number of 24 digits) contains 22 as substring.

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, 16109842 + ... + 16125202.

It is an arithmetic number, because the mean of its divisors is an integer number (11915074440).

Almost surely, 2^247581255442 is an apocalyptic number.

247581255442 is a deficient number, since it is larger than the sum of its proper divisors (133701126638).

247581255442 is a wasteful number, since it uses less digits than its factorization.

247581255442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16306.

The product of its digits is 3584000, while the sum is 49.

The spelling of 247581255442 in words is "two hundred forty-seven billion, five hundred eighty-one million, two hundred fifty-five thousand, four hundred forty-two".