245913755537 has 4 divisors (see below), whose sum is σ = 246135500340. Its totient is φ = 245692010736.

The previous prime is 245913755531. The next prime is 245913755597. The reversal of 245913755537 is 735557319542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 735557319542 = 2 ⋅367778659771.

It can be written as a sum of positive squares in 2 ways, for example, as 37919383441 + 207994372096 = 194729^2 + 456064^2 .

It is a cyclic number.

It is not a de Polignac number, because 245913755537 - 2¹² = 245913751441 is a prime.

It is a super-2 number, since 2×245913755537² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245913755531) 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, 110870738 + ... + 110872955.

It is an arithmetic number, because the mean of its divisors is an integer number (61533875085).

Almost surely, 2^245913755537 is an apocalyptic number.

It is an amenable number.

245913755537 is a deficient number, since it is larger than the sum of its proper divisors (221744803).

245913755537 is a wasteful number, since it uses less digits than its factorization.

245913755537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221744802.

The product of its digits is 19845000, while the sum is 56.

The spelling of 245913755537 in words is "two hundred forty-five billion, nine hundred thirteen million, seven hundred fifty-five thousand, five hundred thirty-seven".