20153215347 has 4 divisors (see below), whose sum is σ = 26870953800. Its totient is φ = 13435476896.

The previous prime is 20153215343. The next prime is 20153215367. The reversal of 20153215347 is 74351235102.

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

It is a cyclic number.

It is not a de Polignac number, because 20153215347 - 2² = 20153215343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20153215343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3358869222 + ... + 3358869227.

It is an arithmetic number, because the mean of its divisors is an integer number (6717738450).

Almost surely, 2^20153215347 is an apocalyptic number.

20153215347 is a deficient number, since it is larger than the sum of its proper divisors (6717738453).

20153215347 is an equidigital number, since it uses as much as digits as its factorization.

20153215347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6717738452.

The product of its (nonzero) digits is 25200, while the sum is 33.

The spelling of 20153215347 in words is "twenty billion, one hundred fifty-three million, two hundred fifteen thousand, three hundred forty-seven".