20948417945698 has 4 divisors (see below), whose sum is σ = 31422626918550. Its totient is φ = 10474208972848.

The previous prime is 20948417945659. The next prime is 20948417945713. The reversal of 20948417945698 is 89654971484902.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15473814740329 + 5474603205369 = 3933677^2 + 2339787^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5237104486423 + ... + 5237104486426.

Almost surely, 2^{20948417945698} is an apocalyptic number.

20948417945698 is a deficient number, since it is larger than the sum of its proper divisors (10474208972852).

20948417945698 is a wasteful number, since it uses less digits than its factorization.

20948417945698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10474208972851.

The product of its (nonzero) digits is 1254113280, while the sum is 76.

The spelling of 20948417945698 in words is "twenty trillion, nine hundred forty-eight billion, four hundred seventeen million, nine hundred forty-five thousand, six hundred ninety-eight".