20315252541355 has 8 divisors (see below), whose sum is σ = 24379205543712. Its totient is φ = 16251600370368.

The previous prime is 20315252541347. The next prime is 20315252541407. The reversal of 20315252541355 is 55314525251302.

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

It is a cyclic number.

It is not a de Polignac number, because 20315252541355 - 2³ = 20315252541347 is a prime.

It is a Duffinian 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, 75059247 + ... + 75329416.

It is an arithmetic number, because the mean of its divisors is an integer number (3047400692964).

Almost surely, 2^{20315252541355} is an apocalyptic number.

20315252541355 is a deficient number, since it is larger than the sum of its proper divisors (4063953002357).

20315252541355 is a wasteful number, since it uses less digits than its factorization.

20315252541355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150415685.

The product of its (nonzero) digits is 900000, while the sum is 43.

Adding to 20315252541355 its reverse (55314525251302), we get a palindrome (75629777792657).

The spelling of 20315252541355 in words is "twenty trillion, three hundred fifteen billion, two hundred fifty-two million, five hundred forty-one thousand, three hundred fifty-five".