61948549208 has 64 divisors (see below), whose sum is σ = 143170493760. Its totient is φ = 24470724096.

The previous prime is 61948549193. The next prime is 61948549211. The reversal of 61948549208 is 80294584916.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 430010 + ... + 555702.

It is an arithmetic number, because the mean of its divisors is an integer number (2237038965).

Almost surely, 2^61948549208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61948549208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71585246880).

61948549208 is an abundant number, since it is smaller than the sum of its proper divisors (81221944552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61948549208 is a wasteful number, since it uses less digits than its factorization.

61948549208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126396 (or 126392 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 56.

The spelling of 61948549208 in words is "sixty-one billion, nine hundred forty-eight million, five hundred forty-nine thousand, two hundred eight".