61101666507 has 8 divisors (see below), whose sum is σ = 93107301376. Its totient is φ = 34915237992.

The previous prime is 61101666463. The next prime is 61101666511. The reversal of 61101666507 is 70566610116.

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

It is not a de Polignac number, because 61101666507 - 2¹⁶ = 61101600971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61101666517) 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, 1454801563 + ... + 1454801604.

It is an arithmetic number, because the mean of its divisors is an integer number (11638412672).

Almost surely, 2^61101666507 is an apocalyptic number.

61101666507 is a deficient number, since it is larger than the sum of its proper divisors (32005634869).

61101666507 is a wasteful number, since it uses less digits than its factorization.

61101666507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2909603177.

The product of its (nonzero) digits is 45360, while the sum is 39.

The spelling of 61101666507 in words is "sixty-one billion, one hundred one million, six hundred sixty-six thousand, five hundred seven".