20115601234 has 16 divisors (see below), whose sum is σ = 31673835648. Its totient is φ = 9562893472.

The previous prime is 20115601193. The next prime is 20115601277. The reversal of 20115601234 is 43210651102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20115601199 and 20115601208.

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, 1301587 + ... + 1316950.

It is an arithmetic number, because the mean of its divisors is an integer number (1979614728).

Almost surely, 2^20115601234 is an apocalyptic number.

20115601234 is a deficient number, since it is larger than the sum of its proper divisors (11558234414).

20115601234 is a wasteful number, since it uses less digits than its factorization.

20115601234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2618729.

The product of its (nonzero) digits is 1440, while the sum is 25.

The spelling of 20115601234 in words is "twenty billion, one hundred fifteen million, six hundred one thousand, two hundred thirty-four".