20435061507 has 16 divisors (see below), whose sum is σ = 32778044160. Its totient is φ = 11062589472.

The previous prime is 20435061487. The next prime is 20435061571. The reversal of 20435061507 is 70516053402.

It is not a de Polignac number, because 20435061507 - 2¹⁰ = 20435060483 is a prime.

It is a super-2 number, since 2×20435061507² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20435061007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25607448 + ... + 25608245.

It is an arithmetic number, because the mean of its divisors is an integer number (2048627760).

Almost surely, 2^20435061507 is an apocalyptic number.

20435061507 is a deficient number, since it is larger than the sum of its proper divisors (12342982653).

20435061507 is a wasteful number, since it uses less digits than its factorization.

20435061507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51215722.

The product of its (nonzero) digits is 25200, while the sum is 33.

The spelling of 20435061507 in words is "twenty billion, four hundred thirty-five million, sixty-one thousand, five hundred seven".