61276619712 has 672 divisors, whose sum is σ = 220825405440. Its totient is φ = 14527641600.

The previous prime is 61276619687. The next prime is 61276619759. The reversal of 61276619712 is 21791667216.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 269940943 + ... + 269941169.

Almost surely, 2^61276619712 is an apocalyptic number.

61276619712 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61276619712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110412702720).

61276619712 is an abundant number, since it is smaller than the sum of its proper divisors (159548785728).

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

61276619712 is a wasteful number, since it uses less digits than its factorization.

61276619712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341 (or 300 counting only the distinct ones).

The product of its digits is 381024, while the sum is 48.

The spelling of 61276619712 in words is "sixty-one billion, two hundred seventy-six million, six hundred nineteen thousand, seven hundred twelve".