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61879350468 = 22313396662503
BaseRepresentation
bin111001101000010010…
…111111010011000100
312220201110220200221010
4321220102333103010
52003212103203333
644232121122220
74320266541405
oct715022772304
9186643820833
1061879350468
1124274309971
12bbab329370
135ab1c10aa0
142dd03039ac
151922732563
hexe684bf4c4

61879350468 has 24 divisors (see below), whose sum is σ = 155491701568. Its totient is φ = 19039800096.

The previous prime is 61879350451. The next prime is 61879350497. The reversal of 61879350468 is 86405397816.

61879350468 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198331096 + ... + 198331407.

Almost surely, 261879350468 is an apocalyptic number.

It is an amenable number.

61879350468 is an abundant number, since it is smaller than the sum of its proper divisors (93612351100).

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

61879350468 is a wasteful number, since it uses less digits than its factorization.

61879350468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396662523 (or 396662521 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 57.

The spelling of 61879350468 in words is "sixty-one billion, eight hundred seventy-nine million, three hundred fifty thousand, four hundred sixty-eight".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 396662503 793325006 1189987509 1586650012 2379975018 4759950036 5156612539 10313225078 15469837617 20626450156 30939675234 61879350468