20743415415 has 16 divisors (see below), whose sum is σ = 36877183200. Its totient is φ = 11063154816.

The previous prime is 20743415411. The next prime is 20743415431. The reversal of 20743415415 is 51451434702.

20743415415 is a `hidden beast` number, since 2 + 0 + 74 + 3 + 41 + 541 + 5 = 666.

It is not a de Polignac number, because 20743415415 - 2² = 20743415411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20743415415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20743415411) 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, 76827330 + ... + 76827599.

It is an arithmetic number, because the mean of its divisors is an integer number (2304823950).

Almost surely, 2^20743415415 is an apocalyptic number.

20743415415 is a deficient number, since it is larger than the sum of its proper divisors (16133767785).

20743415415 is a wasteful number, since it uses less digits than its factorization.

20743415415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153654943 (or 153654937 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The spelling of 20743415415 in words is "twenty billion, seven hundred forty-three million, four hundred fifteen thousand, four hundred fifteen".