42739561398 has 16 divisors (see below), whose sum is σ = 85862439936. Its totient is φ = 14182634280.

The previous prime is 42739561349. The next prime is 42739561411. The reversal of 42739561398 is 89316593724.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15970098 + ... + 15972773.

It is an arithmetic number, because the mean of its divisors is an integer number (5366402496).

Almost surely, 2^42739561398 is an apocalyptic number.

42739561398 is an abundant number, since it is smaller than the sum of its proper divisors (43122878538).

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

42739561398 is a wasteful number, since it uses less digits than its factorization.

42739561398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31943099.

The product of its digits is 9797760, while the sum is 57.

The spelling of 42739561398 in words is "forty-two billion, seven hundred thirty-nine million, five hundred sixty-one thousand, three hundred ninety-eight".