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61430157707 = 792573025669
BaseRepresentation
bin111001001101100001…
…011101000110001011
312212120011200100022012
4321031201131012023
52001302110021312
644115353250135
74303203503462
oct711541350613
9185504610265
1061430157707
11240637a4786
12baa4a0394b
135a3cb37659
142d8a7b59d9
1518e80a3322
hexe4d85d18b

61430157707 has 8 divisors (see below), whose sum is σ = 62449828800. Its totient is φ = 60416538624.

The previous prime is 61430157673. The next prime is 61430157749. The reversal of 61430157707 is 70775103416.

61430157707 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61430157707 - 218 = 61429895563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61430157007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1492532 + ... + 1533137.

It is an arithmetic number, because the mean of its divisors is an integer number (7806228600).

Almost surely, 261430157707 is an apocalyptic number.

61430157707 is a deficient number, since it is larger than the sum of its proper divisors (1019671093).

61430157707 is a wasteful number, since it uses less digits than its factorization.

61430157707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3026005.

The product of its (nonzero) digits is 123480, while the sum is 41.

The spelling of 61430157707 in words is "sixty-one billion, four hundred thirty million, one hundred fifty-seven thousand, seven hundred seven".

Divisors: 1 79 257 20303 3025669 239027851 777596933 61430157707