315240445215551 has 8 divisors (see below), whose sum is σ = 316514951731440. Its totient is φ = 313967546912448.

The previous prime is 315240445215547. The next prime is 315240445215667. The reversal of 315240445215551 is 155512544042513.

It is a happy number.

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 315240445215551 - 2² = 315240445215547 is a prime.

It is a super-2 number, since 2×315240445215551² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 315240445215496 and 315240445215505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315240445215251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401660366 + ... + 402444443.

It is an arithmetic number, because the mean of its divisors is an integer number (39564368966430).

Almost surely, 2^{315240445215551} is an apocalyptic number.

315240445215551 is a deficient number, since it is larger than the sum of its proper divisors (1274506515889).

315240445215551 is a wasteful number, since it uses less digits than its factorization.

315240445215551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804106393.

The product of its (nonzero) digits is 2400000, while the sum is 47.

The spelling of 315240445215551 in words is "three hundred fifteen trillion, two hundred forty billion, four hundred forty-five million, two hundred fifteen thousand, five hundred fifty-one".