20148626305 has 16 divisors (see below), whose sum is σ = 24414722640. Its totient is φ = 15961900032.

The previous prime is 20148626273. The next prime is 20148626339. The reversal of 20148626305 is 50362684102.

It can be written as a sum of positive squares in 8 ways, for example, as 197346304 + 19951280001 = 14048^2 + 141249^2 .

It is a cyclic number.

It is not a de Polignac number, because 20148626305 - 2⁵ = 20148626273 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244207 + ... + 316123.

It is an arithmetic number, because the mean of its divisors is an integer number (1525920165).

Almost surely, 2^20148626305 is an apocalyptic number.

It is an amenable number.

20148626305 is a deficient number, since it is larger than the sum of its proper divisors (4266096335).

20148626305 is a wasteful number, since it uses less digits than its factorization.

20148626305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72468.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 20148626305 in words is "twenty billion, one hundred forty-eight million, six hundred twenty-six thousand, three hundred five".