401259954545 has 4 divisors (see below), whose sum is σ = 481511945460. Its totient is φ = 321007963632.

The previous prime is 401259954539. The next prime is 401259954653. The reversal of 401259954545 is 545459952104.

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

It can be written as a sum of positive squares in 2 ways, for example, as 273102398464 + 128157556081 = 522592^2 + 357991^2 .

It is a cyclic number.

It is not a de Polignac number, because 401259954545 - 2²⁴ = 401243177329 is a prime.

It is a super-2 number, since 2×401259954545² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40125995450 + ... + 40125995459.

It is an arithmetic number, because the mean of its divisors is an integer number (120377986365).

Almost surely, 2^401259954545 is an apocalyptic number.

It is an amenable number.

401259954545 is a deficient number, since it is larger than the sum of its proper divisors (80251990915).

401259954545 is an equidigital number, since it uses as much as digits as its factorization.

401259954545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80251990914.

The product of its (nonzero) digits is 6480000, while the sum is 53.

The spelling of 401259954545 in words is "four hundred one billion, two hundred fifty-nine million, nine hundred fifty-four thousand, five hundred forty-five".