20418697782001 has 8 divisors (see below), whose sum is σ = 20870849997504. Its totient is φ = 19969023113520.

The previous prime is 20418697781941. The next prime is 20418697782031. The reversal of 20418697782001 is 10028779681402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20418697782001 is a prime.

It is a super-2 number, since 2×20418697782001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20418697782031) 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, 619370091 + ... + 619403056.

It is an arithmetic number, because the mean of its divisors is an integer number (2608856249688).

Almost surely, 2^{20418697782001} is an apocalyptic number.

It is an amenable number.

20418697782001 is a deficient number, since it is larger than the sum of its proper divisors (452152215503).

20418697782001 is a wasteful number, since it uses less digits than its factorization.

20418697782001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238773511.

The product of its (nonzero) digits is 2709504, while the sum is 55.

The spelling of 20418697782001 in words is "twenty trillion, four hundred eighteen billion, six hundred ninety-seven million, seven hundred eighty-two thousand, one".