61051550148 has 96 divisors (see below), whose sum is σ = 160774467840. Its totient is φ = 20030976000.

The previous prime is 61051550141. The next prime is 61051550149. The reversal of 61051550148 is 84105515016.

61051550148 is a `hidden beast` number, since 6 + 10 + 51 + 550 + 1 + 48 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (61051550141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4908978 + ... + 4921398.

It is an arithmetic number, because the mean of its divisors is an integer number (1674734040).

Almost surely, 2^61051550148 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 61051550148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80387233920).

61051550148 is an abundant number, since it is smaller than the sum of its proper divisors (99722917692).

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

61051550148 is a wasteful number, since it uses less digits than its factorization.

61051550148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13146 (or 13138 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 36.

The spelling of 61051550148 in words is "sixty-one billion, fifty-one million, five hundred fifty thousand, one hundred forty-eight".