61159943955 has 16 divisors (see below), whose sum is σ = 106751902464. Its totient is φ = 29653306080.

The previous prime is 61159943953. The next prime is 61159943963. The reversal of 61159943955 is 55934995116.

It is not a de Polignac number, because 61159943955 - 2¹ = 61159943953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61159943895 and 61159943904.

It is not an unprimeable number, because it can be changed into a prime (61159943951) 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, 185332999 + ... + 185333328.

It is an arithmetic number, because the mean of its divisors is an integer number (6671993904).

Almost surely, 2^61159943955 is an apocalyptic number.

61159943955 is a deficient number, since it is larger than the sum of its proper divisors (45591958509).

61159943955 is a wasteful number, since it uses less digits than its factorization.

61159943955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370666346.

The product of its digits is 6561000, while the sum is 57.

The spelling of 61159943955 in words is "sixty-one billion, one hundred fifty-nine million, nine hundred forty-three thousand, nine hundred fifty-five".