61167408669 has 12 divisors (see below), whose sum is σ = 90232773696. Its totient is φ = 39910649352.

The previous prime is 61167408667. The next prime is 61167408689. The reversal of 61167408669 is 96680476116.

It is a happy number.

It is not a de Polignac number, because 61167408669 - 2¹ = 61167408667 is a prime.

It is a super-2 number, since 2×61167408669² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61167408667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72301479 + ... + 72302324.

It is an arithmetic number, because the mean of its divisors is an integer number (7519397808).

Almost surely, 2^61167408669 is an apocalyptic number.

It is an amenable number.

61167408669 is a deficient number, since it is larger than the sum of its proper divisors (29065365027).

61167408669 is a wasteful number, since it uses less digits than its factorization.

61167408669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144603856 (or 144603853 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 61167408669 in words is "sixty-one billion, one hundred sixty-seven million, four hundred eight thousand, six hundred sixty-nine".