315520044550451 has 4 divisors (see below), whose sum is σ = 339790817208192. Its totient is φ = 291249271892712.

The previous prime is 315520044550429. The next prime is 315520044550457. The reversal of 315520044550451 is 154055440025513.

It is a happy number.

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 315520044550451 - 2²⁶ = 315519977441587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315520044550457) 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, 12135386328851 + ... + 12135386328876.

It is an arithmetic number, because the mean of its divisors is an integer number (84947704302048).

Almost surely, 2^{315520044550451} is an apocalyptic number.

315520044550451 is a deficient number, since it is larger than the sum of its proper divisors (24270772657741).

315520044550451 is a wasteful number, since it uses less digits than its factorization.

315520044550451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24270772657740.

The product of its (nonzero) digits is 1200000, while the sum is 44.

Adding to 315520044550451 its reverse (154055440025513), we get a palindrome (469575484575964).

The spelling of 315520044550451 in words is "three hundred fifteen trillion, five hundred twenty billion, forty-four million, five hundred fifty thousand, four hundred fifty-one".