61880711663 has 4 divisors (see below), whose sum is σ = 61883457888. Its totient is φ = 61877965440.

The previous prime is 61880711611. The next prime is 61880711701. The reversal of 61880711663 is 36611708816.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61880711663 - 2³⁴ = 44700842479 is a prime.

It is a super-3 number, since 3×61880711663³ (a number of 33 digits) contains 333 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 (61880711063) 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, 1339031 + ... + 1384472.

It is an arithmetic number, because the mean of its divisors is an integer number (15470864472).

Almost surely, 2^61880711663 is an apocalyptic number.

61880711663 is a deficient number, since it is larger than the sum of its proper divisors (2746225).

61880711663 is a wasteful number, since it uses less digits than its factorization.

61880711663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2746224.

The product of its (nonzero) digits is 290304, while the sum is 47.

The spelling of 61880711663 in words is "sixty-one billion, eight hundred eighty million, seven hundred eleven thousand, six hundred sixty-three".