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61025244320 = 255381407777
BaseRepresentation
bin111000110101011000…
…110101010010100000
312211111221202121120002
4320311120311102200
51444434430304240
644011250435132
74260156006125
oct706530652240
9184457677502
1061025244320
1123976183317
12b9b1292aa8
1359a6c95831
142d4cad274c
1518c276dd15
hexe356354a0

61025244320 has 24 divisors (see below), whose sum is σ = 144172140084. Its totient is φ = 24410097664.

The previous prime is 61025244311. The next prime is 61025244331. The reversal of 61025244320 is 2344252016.

It can be written as a sum of positive squares in 2 ways, for example, as 58503999376 + 2521244944 = 241876^2 + 50212^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190703729 + ... + 190704048.

Almost surely, 261025244320 is an apocalyptic number.

It is an amenable number.

61025244320 is an abundant number, since it is smaller than the sum of its proper divisors (83146895764).

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

61025244320 is a wasteful number, since it uses less digits than its factorization.

61025244320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381407792 (or 381407784 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 61025244320 its reverse (2344252016), we get a palindrome (63369496336).

The spelling of 61025244320 in words is "sixty-one billion, twenty-five million, two hundred forty-four thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 381407777 762815554 1525631108 1907038885 3051262216 3814077770 6102524432 7628155540 12205048864 15256311080 30512622160 61025244320