61378907548 has 24 divisors (see below), whose sum is σ = 122765819904. Its totient is φ = 26303530800.

The previous prime is 61378907533. The next prime is 61378907581. The reversal of 61378907548 is 84570987316.

It is a junction number, because it is equal to n+sod(n) for n = 61378907492 and 61378907501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426453 + ... + 551923.

It is an arithmetic number, because the mean of its divisors is an integer number (5115242496).

Almost surely, 2^61378907548 is an apocalyptic number.

It is an amenable number.

61378907548 is an abundant number, since it is smaller than the sum of its proper divisors (61386912356).

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

61378907548 is a wasteful number, since it uses less digits than its factorization.

61378907548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142953 (or 142951 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 58.

The spelling of 61378907548 in words is "sixty-one billion, three hundred seventy-eight million, nine hundred seven thousand, five hundred forty-eight".