61950003549 has 8 divisors (see below), whose sum is σ = 94400005440. Its totient is φ = 35400002016.

The previous prime is 61950003539. The next prime is 61950003589. The reversal of 61950003549 is 94530005916.

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

It is not a de Polignac number, because 61950003549 - 2¹⁹ = 61949479261 is a prime.

It is a super-2 number, since 2×61950003549² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 61950003549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61950003509) 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, 1475000064 + ... + 1475000105.

It is an arithmetic number, because the mean of its divisors is an integer number (11800000680).

Almost surely, 2^61950003549 is an apocalyptic number.

It is an amenable number.

61950003549 is a deficient number, since it is larger than the sum of its proper divisors (32450001891).

61950003549 is a wasteful number, since it uses less digits than its factorization.

61950003549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2950000179.

The product of its (nonzero) digits is 145800, while the sum is 42.

The spelling of 61950003549 in words is "sixty-one billion, nine hundred fifty million, three thousand, five hundred forty-nine".