53403720394 has 16 divisors (see below), whose sum is σ = 85337592480. Its totient is φ = 24991720560.

The previous prime is 53403720319. The next prime is 53403720421. The reversal of 53403720394 is 49302730435.

53403720394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 8462877 + ... + 8469184.

It is an arithmetic number, because the mean of its divisors is an integer number (5333599530).

Almost surely, 2^53403720394 is an apocalyptic number.

53403720394 is a deficient number, since it is larger than the sum of its proper divisors (31933872086).

53403720394 is a wasteful number, since it uses less digits than its factorization.

53403720394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16932165.

The product of its (nonzero) digits is 272160, while the sum is 40.

The spelling of 53403720394 in words is "fifty-three billion, four hundred three million, seven hundred twenty thousand, three hundred ninety-four".