1316562421650 has 72 divisors (see below), whose sum is σ = 3798148264560. Its totient is φ = 300928551840.

The previous prime is 1316562421639. The next prime is 1316562421667. The reversal of 1316562421650 is 561242656131.

It is a super-2 number, since 2×1316562421650² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 89554720 + ... + 89569419.

It is an arithmetic number, because the mean of its divisors is an integer number (52752059230).

Almost surely, 2^{1316562421650} is an apocalyptic number.

1316562421650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1316562421650 is an abundant number, since it is smaller than the sum of its proper divisors (2481585842910).

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

1316562421650 is a wasteful number, since it uses less digits than its factorization.

1316562421650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179124168 (or 179124156 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 1316562421650 in words is "one trillion, three hundred sixteen billion, five hundred sixty-two million, four hundred twenty-one thousand, six hundred fifty".