61653404541 has 8 divisors (see below), whose sum is σ = 82212361024. Its totient is φ = 41098358880.

The previous prime is 61653404537. The next prime is 61653404557. The reversal of 61653404541 is 14540435616.

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

It is not a de Polignac number, because 61653404541 - 2² = 61653404537 is a prime.

It is a super-2 number, since 2×61653404541² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61653404541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61653404591) 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, 940720 + ... + 1004121.

It is an arithmetic number, because the mean of its divisors is an integer number (10276545128).

Almost surely, 2^61653404541 is an apocalyptic number.

It is an amenable number.

61653404541 is a deficient number, since it is larger than the sum of its proper divisors (20558956483).

61653404541 is a wasteful number, since it uses less digits than its factorization.

61653404541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955411.

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 61653404541 in words is "sixty-one billion, six hundred fifty-three million, four hundred four thousand, five hundred forty-one".