23578861620737 has 2 divisors, whose sum is σ = 23578861620738. Its totient is φ = 23578861620736.

The previous prime is 23578861620733. The next prime is 23578861620781. The reversal of 23578861620737 is 73702616887532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22385095601521 + 1193766019216 = 4731289^2 + 1092596^2 .

It is a cyclic number.

It is not a de Polignac number, because 23578861620737 - 2² = 23578861620733 is a prime.

It is not a weakly prime, because it can be changed into another prime (23578861620733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11789430810368 + 11789430810369.

It is an arithmetic number, because the mean of its divisors is an integer number (11789430810369).

Almost surely, 2^{23578861620737} is an apocalyptic number.

It is an amenable number.

23578861620737 is a deficient number, since it is larger than the sum of its proper divisors (1).

23578861620737 is an equidigital number, since it uses as much as digits as its factorization.

23578861620737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142248960, while the sum is 65.

The spelling of 23578861620737 in words is "twenty-three trillion, five hundred seventy-eight billion, eight hundred sixty-one million, six hundred twenty thousand, seven hundred thirty-seven".