61654418031 has 8 divisors (see below), whose sum is σ = 82220363440. Its totient is φ = 41095708992.

The previous prime is 61654418003. The next prime is 61654418057. The reversal of 61654418031 is 13081445616.

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

It is not a de Polignac number, because 61654418031 - 2²⁷ = 61520200303 is a prime.

It is a super-2 number, since 2×61654418031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61654413031) 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, 1789180 + ... + 1823313.

It is an arithmetic number, because the mean of its divisors is an integer number (10277545430).

Almost surely, 2^61654418031 is an apocalyptic number.

61654418031 is a deficient number, since it is larger than the sum of its proper divisors (20565945409).

61654418031 is a wasteful number, since it uses less digits than its factorization.

61654418031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3618185.

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 61654418031 in words is "sixty-one billion, six hundred fifty-four million, four hundred eighteen thousand, thirty-one".