245521566633 has 48 divisors (see below), whose sum is σ = 384563477760. Its totient is φ = 138916560384.

The previous prime is 245521566571. The next prime is 245521566637. The reversal of 245521566633 is 336665125542.

It is a happy number.

It is not a de Polignac number, because 245521566633 - 2¹⁸ = 245521304489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245521566637) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28468560 + ... + 28477182.

It is an arithmetic number, because the mean of its divisors is an integer number (8011739120).

Almost surely, 2^245521566633 is an apocalyptic number.

It is an amenable number.

245521566633 is a deficient number, since it is larger than the sum of its proper divisors (139041911127).

245521566633 is a wasteful number, since it uses less digits than its factorization.

245521566633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10526 (or 10519 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 48.

The spelling of 245521566633 in words is "two hundred forty-five billion, five hundred twenty-one million, five hundred sixty-six thousand, six hundred thirty-three".