20220520787 has 2 divisors, whose sum is σ = 20220520788. Its totient is φ = 20220520786.

The previous prime is 20220520741. The next prime is 20220520811. The reversal of 20220520787 is 78702502202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20220520787 - 2¹² = 20220516691 is a prime.

It is not a weakly prime, because it can be changed into another prime (20220520687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110260393 + 10110260394.

It is an arithmetic number, because the mean of its divisors is an integer number (10110260394).

Almost surely, 2^20220520787 is an apocalyptic number.

20220520787 is a deficient number, since it is larger than the sum of its proper divisors (1).

20220520787 is an equidigital number, since it uses as much as digits as its factorization.

20220520787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31360, while the sum is 35.

The spelling of 20220520787 in words is "twenty billion, two hundred twenty million, five hundred twenty thousand, seven hundred eighty-seven".