20155353401 has 2 divisors, whose sum is σ = 20155353402. Its totient is φ = 20155353400.

The previous prime is 20155353341. The next prime is 20155353433. The reversal of 20155353401 is 10435355102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10867020025 + 9288333376 = 104245^2 + 96376^2 .

It is a cyclic number.

It is not a de Polignac number, because 20155353401 - 2²⁶ = 20088244537 is a prime.

It is a super-3 number, since 3×20155353401³ (a number of 32 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20155353301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10077676700 + 10077676701.

It is an arithmetic number, because the mean of its divisors is an integer number (10077676701).

Almost surely, 2^20155353401 is an apocalyptic number.

It is an amenable number.

20155353401 is a deficient number, since it is larger than the sum of its proper divisors (1).

20155353401 is an equidigital number, since it uses as much as digits as its factorization.

20155353401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 29.

The spelling of 20155353401 in words is "twenty billion, one hundred fifty-five million, three hundred fifty-three thousand, four hundred one".