1315311072650 has 48 divisors (see below), whose sum is σ = 2497596643584. Its totient is φ = 515170793280.

The previous prime is 1315311072619. The next prime is 1315311072653. The reversal of 1315311072650 is 562701135131.

It is a self number, because there is not a number n which added to its sum of digits gives 1315311072650.

It is not an unprimeable number, because it can be changed into a prime (1315311072653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 839567 + ... + 1826333.

It is an arithmetic number, because the mean of its divisors is an integer number (52033263408).

Almost surely, 2^{1315311072650} is an apocalyptic number.

1315311072650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1315311072650 is a deficient number, since it is larger than the sum of its proper divisors (1182285570934).

1315311072650 is a wasteful number, since it uses less digits than its factorization.

1315311072650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987335 (or 987330 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 35.

The spelling of 1315311072650 in words is "one trillion, three hundred fifteen billion, three hundred eleven million, seventy-two thousand, six hundred fifty".