20193705670 has 16 divisors (see below), whose sum is σ = 36362146608. Its totient is φ = 8074487520.

The previous prime is 20193705661. The next prime is 20193705671. The reversal of 20193705670 is 7650739102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20193705671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345921 + ... + 400060.

It is an arithmetic number, because the mean of its divisors is an integer number (2272634163).

Almost surely, 2^20193705670 is an apocalyptic number.

20193705670 is a deficient number, since it is larger than the sum of its proper divisors (16168440938).

20193705670 is a wasteful number, since it uses less digits than its factorization.

20193705670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748695.

The product of its (nonzero) digits is 79380, while the sum is 40.

The spelling of 20193705670 in words is "twenty billion, one hundred ninety-three million, seven hundred five thousand, six hundred seventy".