1264601616541 has 8 divisors (see below), whose sum is σ = 1270562356224. Its totient is φ = 1258643465520.

The previous prime is 1264601616469. The next prime is 1264601616557. The reversal of 1264601616541 is 1456161064621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1264601616541 - 2³¹ = 1262454132893 is a prime.

It is a super-2 number, since 2×1264601616541² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264601616041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335676 + ... + 1625386.

It is an arithmetic number, because the mean of its divisors is an integer number (158820294528).

Almost surely, 2^{1264601616541} is an apocalyptic number.

It is an amenable number.

1264601616541 is a deficient number, since it is larger than the sum of its proper divisors (5960739683).

1264601616541 is a wasteful number, since it uses less digits than its factorization.

1264601616541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294331.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 1264601616541 in words is "one trillion, two hundred sixty-four billion, six hundred one million, six hundred sixteen thousand, five hundred forty-one".