61577212063001 has 4 divisors (see below), whose sum is σ = 61589879669604. Its totient is φ = 61564544456400.

The previous prime is 61577212062967. The next prime is 61577212063013. The reversal of 61577212063001 is 10036021277516.

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 35668653960976 + 25908558102025 = 5972324^2 + 5090045^2 .

It is a cyclic number.

It is not a de Polignac number, because 61577212063001 - 2¹⁴ = 61577212046617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61577212063001.

It is not an unprimeable number, because it can be changed into a prime (61577212063051) 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, 6333796010 + ... + 6333805731.

It is an arithmetic number, because the mean of its divisors is an integer number (15397469917401).

Almost surely, 2^{61577212063001} is an apocalyptic number.

It is an amenable number.

61577212063001 is a deficient number, since it is larger than the sum of its proper divisors (12667606603).

61577212063001 is a wasteful number, since it uses less digits than its factorization.

61577212063001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12667606602.

The product of its (nonzero) digits is 105840, while the sum is 41.

The spelling of 61577212063001 in words is "sixty-one trillion, five hundred seventy-seven billion, two hundred twelve million, sixty-three thousand, one".