20419290526 has 4 divisors (see below), whose sum is σ = 30628935792. Its totient is φ = 10209645262.

The previous prime is 20419290509. The next prime is 20419290547. The reversal of 20419290526 is 62509291402.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5104822630 + ... + 5104822633.

It is an arithmetic number, because the mean of its divisors is an integer number (7657233948).

Almost surely, 2^20419290526 is an apocalyptic number.

20419290526 is a deficient number, since it is larger than the sum of its proper divisors (10209645266).

20419290526 is a wasteful number, since it uses less digits than its factorization.

20419290526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10209645265.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 20419290526 in words is "twenty billion, four hundred nineteen million, two hundred ninety thousand, five hundred twenty-six".