20347753407 has 16 divisors (see below), whose sum is σ = 28735401312. Its totient is φ = 12763146240.

The previous prime is 20347753403. The next prime is 20347753411. The reversal of 20347753407 is 70435774302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20347753403) and next prime (20347753411).

It is not a de Polignac number, because 20347753407 - 2² = 20347753403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20347753403) 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, 102057 + ... + 226077.

It is an arithmetic number, because the mean of its divisors is an integer number (1795962582).

Almost surely, 2^20347753407 is an apocalyptic number.

20347753407 is a deficient number, since it is larger than the sum of its proper divisors (8387647905).

20347753407 is a wasteful number, since it uses less digits than its factorization.

20347753407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127258.

The product of its (nonzero) digits is 493920, while the sum is 42.

The spelling of 20347753407 in words is "twenty billion, three hundred forty-seven million, seven hundred fifty-three thousand, four hundred seven".