601551407309440 has 128 divisors (see below), whose sum is σ = 1643535684777600. Its totient is φ = 206244778242048.

The previous prime is 601551407309407. The next prime is 601551407309483. The reversal of 601551407309440 is 44903704155106.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×601551407309440² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 809518542 + ... + 810261298.

It is an arithmetic number, because the mean of its divisors is an integer number (12840122537325).

Almost surely, 2^{601551407309440} is an apocalyptic number.

It is an amenable number.

601551407309440 is an abundant number, since it is smaller than the sum of its proper divisors (1041984277468160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

601551407309440 is a wasteful number, since it uses less digits than its factorization.

601551407309440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923562 (or 923550 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 601551407309440 in words is "six hundred one trillion, five hundred fifty-one billion, four hundred seven million, three hundred nine thousand, four hundred forty".