20347669958 has 32 divisors (see below), whose sum is σ = 38697765120. Its totient is φ = 7793292960.

The previous prime is 20347669957. The next prime is 20347669967. The reversal of 20347669958 is 85996674302.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a junction number, because it is equal to n+sod(n) for n = 20347669897 and 20347669906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20347669957) 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, 1110641 + ... + 1128812.

It is an arithmetic number, because the mean of its divisors is an integer number (1209305160).

Almost surely, 2^20347669958 is an apocalyptic number.

20347669958 is a deficient number, since it is larger than the sum of its proper divisors (18350095162).

20347669958 is a wasteful number, since it uses less digits than its factorization.

20347669958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239532.

The product of its (nonzero) digits is 19595520, while the sum is 59.

The spelling of 20347669958 in words is "twenty billion, three hundred forty-seven million, six hundred sixty-nine thousand, nine hundred fifty-eight".