20315252541407 has 2 divisors, whose sum is σ = 20315252541408. Its totient is φ = 20315252541406.

The previous prime is 20315252541347. The next prime is 20315252541413. The reversal of 20315252541407 is 70414525251302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20315252541407 - 2¹⁴ = 20315252525023 is a prime.

It is a super-2 number, since 2×20315252541407² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20315252541497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10157626270703 + 10157626270704.

It is an arithmetic number, because the mean of its divisors is an integer number (10157626270704).

Almost surely, 2^{20315252541407} is an apocalyptic number.

20315252541407 is a deficient number, since it is larger than the sum of its proper divisors (1).

20315252541407 is an equidigital number, since it uses as much as digits as its factorization.

20315252541407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336000, while the sum is 41.

Adding to 20315252541407 its reverse (70414525251302), we get a palindrome (90729777792709).

The spelling of 20315252541407 in words is "twenty trillion, three hundred fifteen billion, two hundred fifty-two million, five hundred forty-one thousand, four hundred seven".