61552064000521 has 4 divisors (see below), whose sum is σ = 61611305641600. Its totient is φ = 61492822359444.

The previous prime is 61552064000477. The next prime is 61552064000533. The reversal of 61552064000521 is 12500046025516.

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 61552064000521 - 2²¹ = 61552061903369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61552067000521) 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, 29620818981 + ... + 29620821058.

It is an arithmetic number, because the mean of its divisors is an integer number (15402826410400).

Almost surely, 2^{61552064000521} is an apocalyptic number.

It is an amenable number.

61552064000521 is a deficient number, since it is larger than the sum of its proper divisors (59241641079).

61552064000521 is a wasteful number, since it uses less digits than its factorization.

61552064000521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59241641078.

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 61552064000521 in words is "sixty-one trillion, five hundred fifty-two billion, sixty-four million, five hundred twenty-one", and thus it is an aban number.