20415035390 has 16 divisors (see below), whose sum is σ = 37072261008. Its totient is φ = 8093748096.

The previous prime is 20415035321. The next prime is 20415035401. The reversal of 20415035390 is 9353051402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9032072 + ... + 9034331.

It is an arithmetic number, because the mean of its divisors is an integer number (2317016313).

Almost surely, 2^20415035390 is an apocalyptic number.

20415035390 is a deficient number, since it is larger than the sum of its proper divisors (16657225618).

20415035390 is a wasteful number, since it uses less digits than its factorization.

20415035390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18066523.

The product of its (nonzero) digits is 16200, while the sum is 32.

Adding to 20415035390 its reverse (9353051402), we get a palindrome (29768086792).

The spelling of 20415035390 in words is "twenty billion, four hundred fifteen million, thirty-five thousand, three hundred ninety".