1061650561601 has 8 divisors (see below), whose sum is σ = 1218391560960. Its totient is φ = 906178720608.

The previous prime is 1061650561553. The next prime is 1061650561603.

1061650561601 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 1061650561601 - 2²² = 1061646367297 is a prime.

It is a super-2 number, since 2×1061650561601² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1061650561603) 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, 317287796 + ... + 317291141.

It is an arithmetic number, because the mean of its divisors is an integer number (152298945120).

Almost surely, 2^{1061650561601} is an apocalyptic number.

It is an amenable number.

1061650561601 is a deficient number, since it is larger than the sum of its proper divisors (156740999359).

1061650561601 is an equidigital number, since it uses as much as digits as its factorization.

1061650561601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634579183.

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 1061650561601 in words is "one trillion, sixty-one billion, six hundred fifty million, five hundred sixty-one thousand, six hundred one".