20155232374 has 8 divisors (see below), whose sum is σ = 30279868920. Its totient is φ = 10061942736.

The previous prime is 20155232311. The next prime is 20155232381. The reversal of 20155232374 is 47323255102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7835119 + ... + 7837690.

It is an arithmetic number, because the mean of its divisors is an integer number (3784983615).

Almost surely, 2^20155232374 is an apocalyptic number.

20155232374 is a deficient number, since it is larger than the sum of its proper divisors (10124636546).

20155232374 is a wasteful number, since it uses less digits than its factorization.

20155232374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15673454.

The product of its (nonzero) digits is 50400, while the sum is 34.

Adding to 20155232374 its reverse (47323255102), we get a palindrome (67478487476).

The spelling of 20155232374 in words is "twenty billion, one hundred fifty-five million, two hundred thirty-two thousand, three hundred seventy-four".