61010555001 has 16 divisors (see below), whose sum is σ = 89621270208. Its totient is φ = 36609992000.

The previous prime is 61010554973. The next prime is 61010555027. The reversal of 61010555001 is 10055501016.

It is a cyclic number.

It is not a de Polignac number, because 61010555001 - 2¹⁸ = 61010292857 is a prime.

It is a super-2 number, since 2×61010555001² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61010555041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9149166 + ... + 9155831.

It is an arithmetic number, because the mean of its divisors is an integer number (5601329388).

Almost surely, 2^61010555001 is an apocalyptic number.

It is an amenable number.

61010555001 is a deficient number, since it is larger than the sum of its proper divisors (28610715207).

61010555001 is a wasteful number, since it uses less digits than its factorization.

61010555001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18305112.

The product of its (nonzero) digits is 750, while the sum is 24.

The spelling of 61010555001 in words is "sixty-one billion, ten million, five hundred fifty-five thousand, one".