61228577376 has 192 divisors, whose sum is σ = 192569529600. Its totient is φ = 18863539200.

The previous prime is 61228577353. The next prime is 61228577393. The reversal of 61228577376 is 67377582216.

It is a happy number.

61228577376 is a `hidden beast` number, since 6 + 12 + 28 + 577 + 37 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 627571 + ... + 718541.

It is an arithmetic number, because the mean of its divisors is an integer number (1002966300).

Almost surely, 2^61228577376 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 61228577376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96284764800).

61228577376 is an abundant number, since it is smaller than the sum of its proper divisors (131340952224).

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

61228577376 is a wasteful number, since it uses less digits than its factorization.

61228577376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91050 (or 91036 counting only the distinct ones).

The product of its digits is 5927040, while the sum is 54.

The spelling of 61228577376 in words is "sixty-one billion, two hundred twenty-eight million, five hundred seventy-seven thousand, three hundred seventy-six".