61011101660000 has 60 divisors (see below), whose sum is σ = 150096461798052. Its totient is φ = 24404440656000.

The previous prime is 61011101659987. The next prime is 61011101660017. The reversal of 61011101660000 is 6610111016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1525257542 + ... + 1525297541.

Almost surely, 2^{61011101660000} is an apocalyptic number.

It is an amenable number.

61011101660000 is an abundant number, since it is smaller than the sum of its proper divisors (89085360138052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61011101660000 is an equidigital number, since it uses as much as digits as its factorization.

61011101660000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3050555113 (or 3050555090 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 61011101660000 its reverse (6610111016), we get a palindrome (61017711771016).

It can be divided in two parts, 610111016 and 60000, that added together give a palindrome (610171016).

The spelling of 61011101660000 in words is "sixty-one trillion, eleven billion, one hundred one million, six hundred sixty thousand".