315453551440 has 20 divisors (see below), whose sum is σ = 733429507284. Its totient is φ = 126181420544.

The previous prime is 315453551363. The next prime is 315453551447. The reversal of 315453551440 is 44155354513.

It can be written as a sum of positive squares in 2 ways, for example, as 63441519376 + 252012032064 = 251876^2 + 502008^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×315453551440² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 315453551393 and 315453551402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315453551447) 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, 1971584617 + ... + 1971584776.

Almost surely, 2^315453551440 is an apocalyptic number.

It is an amenable number.

315453551440 is an abundant number, since it is smaller than the sum of its proper divisors (417975955844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315453551440 is a wasteful number, since it uses less digits than its factorization.

315453551440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3943169406 (or 3943169400 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 315453551440 in words is "three hundred fifteen billion, four hundred fifty-three million, five hundred fifty-one thousand, four hundred forty".