40798397158 has 4 divisors (see below), whose sum is σ = 61197595740. Its totient is φ = 20399198578.

The previous prime is 40798397113. The next prime is 40798397183. The reversal of 40798397158 is 85179389704.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 40798397096 and 40798397105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10199599288 + ... + 10199599291.

It is an arithmetic number, because the mean of its divisors is an integer number (15299398935).

Almost surely, 2^40798397158 is an apocalyptic number.

40798397158 is a deficient number, since it is larger than the sum of its proper divisors (20399198582).

40798397158 is a wasteful number, since it uses less digits than its factorization.

40798397158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20399198581.

The product of its (nonzero) digits is 15240960, while the sum is 61.

The spelling of 40798397158 in words is "forty billion, seven hundred ninety-eight million, three hundred ninety-seven thousand, one hundred fifty-eight".