20402601530 has 16 divisors (see below), whose sum is σ = 37081234944. Its totient is φ = 8081806800.

The previous prime is 20402601517. The next prime is 20402601539. The reversal of 20402601530 is 3510620402.

It is a super-2 number, since 2×20402601530² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20402601496 and 20402601505.

It is not an unprimeable number, because it can be changed into a prime (20402601539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9903146 + ... + 9905205.

It is an arithmetic number, because the mean of its divisors is an integer number (2317577184).

Almost surely, 2^20402601530 is an apocalyptic number.

20402601530 is a deficient number, since it is larger than the sum of its proper divisors (16678633414).

20402601530 is a wasteful number, since it uses less digits than its factorization.

20402601530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19808461.

The product of its (nonzero) digits is 1440, while the sum is 23.

The spelling of 20402601530 in words is "twenty billion, four hundred two million, six hundred one thousand, five hundred thirty".