1350334637521 has 9 divisors (see below), whose sum is σ = 1352894803483. Its totient is φ = 1347779313760.

The previous prime is 1350334637497. The next prime is 1350334637569. The reversal of 1350334637521 is 1257364330531.

It is a happy number.

The square root of 1350334637521 is 1162039.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 236887597521 + 1113447040000 = 486711^2 + 1055200^2 .

It is not a de Polignac number, because 1350334637521 - 2⁵ = 1350334637489 is a prime.

It is a super-2 number, since 2×1350334637521² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1350334637321) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1023755700 + ... + 1023757018.

Almost surely, 2^{1350334637521} is an apocalyptic number.

1350334637521 is the 1162039-th square number.

1350334637521 is the 581020-th centered octagonal number.

It is an amenable number.

1350334637521 is a deficient number, since it is larger than the sum of its proper divisors (2560165962).

1350334637521 is an frugal number, since it uses more digits than its factorization.

1350334637521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4400 (or 2200 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 43.

The spelling of 1350334637521 in words is "one trillion, three hundred fifty billion, three hundred thirty-four million, six hundred thirty-seven thousand, five hundred twenty-one".