20148178717607 has 16 divisors (see below), whose sum is σ = 20339276525568. Its totient is φ = 19958138772000.

The previous prime is 20148178717603. The next prime is 20148178717747. The reversal of 20148178717607 is 70671787184102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20148178717607 - 2² = 20148178717603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20148178717603) 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, 56522978 + ... + 56878320.

It is an arithmetic number, because the mean of its divisors is an integer number (1271204782848).

Almost surely, 2^{20148178717607} is an apocalyptic number.

20148178717607 is a deficient number, since it is larger than the sum of its proper divisors (191097807961).

20148178717607 is a wasteful number, since it uses less digits than its factorization.

20148178717607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356830.

The product of its (nonzero) digits is 7375872, while the sum is 59.

The spelling of 20148178717607 in words is "twenty trillion, one hundred forty-eight billion, one hundred seventy-eight million, seven hundred seventeen thousand, six hundred seven".