1315651129650 has 576 divisors, whose sum is σ = 4232350362240. Its totient is φ = 288819302400.

The previous prime is 1315651129631. The next prime is 1315651129693. The reversal of 1315651129650 is 569211565131.

1315651129650 is a `hidden beast` number, since 1 + 3 + 1 + 56 + 511 + 29 + 65 + 0 = 666.

It is a super-2 number, since 2×1315651129650² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 1315651129596 and 1315651129605.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 750513174 + ... + 750514926.

It is an arithmetic number, because the mean of its divisors is an integer number (7347830490).

Almost surely, 2^{1315651129650} is an apocalyptic number.

1315651129650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1315651129650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2116175181120).

1315651129650 is an abundant number, since it is smaller than the sum of its proper divisors (2916699232590).

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

1315651129650 is a wasteful number, since it uses less digits than its factorization.

1315651129650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011 (or 2003 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

The spelling of 1315651129650 in words is "one trillion, three hundred fifteen billion, six hundred fifty-one million, one hundred twenty-nine thousand, six hundred fifty".