20261426145 has 16 divisors (see below), whose sum is σ = 32437470912. Its totient is φ = 10799697600.

The previous prime is 20261426137. The next prime is 20261426191. The reversal of 20261426145 is 54162416202.

It is not a de Polignac number, because 20261426145 - 2³ = 20261426137 is a prime.

It is a super-2 number, since 2×20261426145² (a number of 21 digits) contains 22 as substring.

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, 373531 + ... + 424320.

It is an arithmetic number, because the mean of its divisors is an integer number (2027341932).

Almost surely, 2^20261426145 is an apocalyptic number.

It is an amenable number.

20261426145 is a deficient number, since it is larger than the sum of its proper divisors (12176044767).

20261426145 is a wasteful number, since it uses less digits than its factorization.

20261426145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799552.

The product of its (nonzero) digits is 23040, while the sum is 33.

The spelling of 20261426145 in words is "twenty billion, two hundred sixty-one million, four hundred twenty-six thousand, one hundred forty-five".