20153471730 has 64 divisors (see below), whose sum is σ = 55295032320. Its totient is φ = 4605096384.

The previous prime is 20153471717. The next prime is 20153471743. The reversal of 20153471730 is 3717435102.

It is an interprime number because it is at equal distance from previous prime (20153471717) and next prime (20153471743).

It is a junction number, because it is equal to n+sod(n) for n = 20153471691 and 20153471700.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 772357 + ... + 798023.

It is an arithmetic number, because the mean of its divisors is an integer number (863984880).

Almost surely, 2^20153471730 is an apocalyptic number.

20153471730 is an abundant number, since it is smaller than the sum of its proper divisors (35141560590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20153471730 is a wasteful number, since it uses less digits than its factorization.

20153471730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29423.

The product of its (nonzero) digits is 17640, while the sum is 33.

The spelling of 20153471730 in words is "twenty billion, one hundred fifty-three million, four hundred seventy-one thousand, seven hundred thirty".