641305629349 has 32 divisors (see below), whose sum is σ = 821804046336. Its totient is φ = 485831027520.

The previous prime is 641305629347. The next prime is 641305629413. The reversal of 641305629349 is 943926503146.

It is a cyclic number.

It is not a de Polignac number, because 641305629349 - 2¹ = 641305629347 is a prime.

It is a super-2 number, since 2×641305629349² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 641305629296 and 641305629305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641305629347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3567544 + ... + 3742990.

It is an arithmetic number, because the mean of its divisors is an integer number (25681376448).

Almost surely, 2^641305629349 is an apocalyptic number.

It is an amenable number.

641305629349 is a deficient number, since it is larger than the sum of its proper divisors (180498416987).

641305629349 is a wasteful number, since it uses less digits than its factorization.

641305629349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176785.

The product of its (nonzero) digits is 4199040, while the sum is 52.

The spelling of 641305629349 in words is "six hundred forty-one billion, three hundred five million, six hundred twenty-nine thousand, three hundred forty-nine".