612966133541 has 4 divisors (see below), whose sum is σ = 627916527084. Its totient is φ = 598015740000.

The previous prime is 612966133513. The next prime is 612966133543. The reversal of 612966133541 is 145331669216.

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 322477472641 + 290488660900 = 567871^2 + 538970^2 .

It is a cyclic number.

It is not a de Polignac number, because 612966133541 - 2¹⁰ = 612966132517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612966133543) 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, 7475196710 + ... + 7475196791.

It is an arithmetic number, because the mean of its divisors is an integer number (156979131771).

Almost surely, 2^612966133541 is an apocalyptic number.

It is an amenable number.

612966133541 is a deficient number, since it is larger than the sum of its proper divisors (14950393543).

612966133541 is a wasteful number, since it uses less digits than its factorization.

612966133541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14950393542.

The product of its digits is 699840, while the sum is 47.

The spelling of 612966133541 in words is "six hundred twelve billion, nine hundred sixty-six million, one hundred thirty-three thousand, five hundred forty-one".