61163939275776 has 704 divisors, whose sum is σ = 194545323624960. Its totient is φ = 18914947891200.

The previous prime is 61163939275711. The next prime is 61163939275783. The reversal of 61163939275776 is 67757293936116.

61163939275776 is a `hidden beast` number, since 6 + 1 + 16 + 3 + 9 + 39 + 2 + 7 + 577 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11990575626 + ... + 11990580726.

It is an arithmetic number, because the mean of its divisors is an integer number (276342789240).

Almost surely, 2^{61163939275776} 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 61163939275776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97272661812480).

61163939275776 is an abundant number, since it is smaller than the sum of its proper divisors (133381384349184).

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

61163939275776 is a wasteful number, since it uses less digits than its factorization.

61163939275776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5507 (or 5483 counting only the distinct ones).

The product of its digits is 540101520, while the sum is 72.

The spelling of 61163939275776 in words is "sixty-one trillion, one hundred sixty-three billion, nine hundred thirty-nine million, two hundred seventy-five thousand, seven hundred seventy-six".