401777013496321 has 4 divisors (see below), whose sum is σ = 401781445912512. Its totient is φ = 401772581080132.

The previous prime is 401777013496277. The next prime is 401777013496357. The reversal of 401777013496321 is 123694310777104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 401777013496321 - 2⁴¹ = 399577990240769 is a prime.

It is a super-2 number, since 2×401777013496321² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401777013496361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2216072125 + ... + 2216253418.

It is an arithmetic number, because the mean of its divisors is an integer number (100445361478128).

Almost surely, 2^{401777013496321} is an apocalyptic number.

It is an amenable number.

401777013496321 is a deficient number, since it is larger than the sum of its proper divisors (4432416191).

401777013496321 is an equidigital number, since it uses as much as digits as its factorization.

401777013496321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4432416190.

The product of its (nonzero) digits is 5334336, while the sum is 55.

The spelling of 401777013496321 in words is "four hundred one trillion, seven hundred seventy-seven billion, thirteen million, four hundred ninety-six thousand, three hundred twenty-one".